Dell Precision 7875 Tower Owner's Manual
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Dell Precision 7875 Tower Owner's Manual

Dell Precision 7875 Tower Owner's Manual

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Precision 7875 Tower
Owner's Manual
Regulatory Model: D04T
Regulatory Type: D04T001
December 2023
Rev. A00

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Summary of Contents for Dell Precision 7875 Tower

  • Page 1 Precision 7875 Tower Owner's Manual Regulatory Model: D04T Regulatory Type: D04T001 December 2023 Rev. A00...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2023 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

  • Page 3: Table Of Contents

    Contents Chapter 1: Views of Precision 7875 Tower..................8 Front....................................... 8 Back......................................9 Chapter 2: Set up your computer....................10 Chapter 3: Specifications of Precision 7875 Tower..............15 Dimensions and weight..............................15 Processor..................................... 15 Chipset....................................16 Operating system................................16 Memory....................................16 Memory matrix..................................17 External ports..................................18...
  • Page 4 Screw list.....................................33 Major components of Precision 7875 Tower......................35 Chapter 5: Removing and installing Customer Replaceable Units (CRUs)........37 Side cover....................................37 Removing the side cover............................37 Installing the side cover............................. 38 Front bezel ..................................39 Removing the front bezel............................39 Installing the front bezel............................39 Top cover....................................
  • Page 5 Removing the front-fan assembly...........................69 Installing the front-fan assembly..........................70 3.5-inch hard-drive assembly............................71 Removing the 3.5-inch hard-drive assembly......................71 Removing the 3.5-inch hard-drive bracket......................72 Installing the 3.5-inch hard-drive bracket......................73 Installing the 3.5-inch hard-drive assembly......................74 2.5-inch hard-drive assembly............................75 Removing the 2.5-inch hard-drive assembly......................
  • Page 6 NVMe-fan assembly (optional)............................ 123 Removing the NVMe-fan assembly (optional)....................123 Installing the NVMe-fan assembly (optional)......................124 Removing the NVMe-backplane assembly (optional)..................125 Installing the NVMe-backplane assembly (optional)..................127 Heat sink.................................... 128 Removing the heat-sink assembly......................... 128 Installing the heat-sink assembly........................... 129 Processor...................................130 Removing the processor............................130 Installing the processor.............................
  • Page 7 Deleting or changing an existing system setup password................174 Clearing CMOS settings..............................175 Clearing BIOS (System Setup) and System passwords..................175 Chapter 10: Troubleshooting...................... 176 Dell SupportAssist Pre-boot System Performance Check diagnostics.............. 176 Running the SupportAssist Pre-Boot System Performance Check.............. 176 Power-Supply Unit Built-in Self-Test ........................176 System-diagnostic lights..............................176 Recovering the operating system..........................

  • Page 8: Chapter 1: Views Of Precision 7875 Tower

    Views of Precision 7875 Tower Front Figure 1. Image: Front view 1. Externally facing flex bays - SATA/M.2 (optional) 2. Slim optical-drive (optional) 3. Power button 4. Hard-drive activity light 5. Headset (headphone and microphone combo) port 6. Two USB 3.2 Gen 1 ports 7.

  • Page 9: Back

    14. Expansion slot 6 (full-height Gen4 PCIe x8 slot), open-ended 15. Service tag location 16. USB 3.2 Gen 1 port with Smart Power On 17. Two USB 3.2 Gen 1 ports 18. PS2 port (optional) - mouse Views of Precision 7875 Tower...

  • Page 10: Chapter 2: Set Up Your Computer

    Set up your computer Steps 1. Connect the keyboard and mouse. Figure 3. Connect the keyboard and mouse 2. Connect to your network using a cable, or connect to a wireless network. Set up your computer...
  • Page 11 Figure 4. Connect to the network 3. Connect the display. Figure 5. Connect the display Set up your computer...
  • Page 12 4. Connect the power cable. Figure 6. Connect the power cable 5. Press the power button. Set up your computer...
  • Page 13 Follow the on-screen instructions to complete the setup. For more information about installing and configuring Ubuntu, search in the Knowledge Base Resource at www.dell.com/support. For Windows: Follow the on-screen instructions to complete the setup. When setting up, Dell Technologies recommends that you: ● Connect to a network for Windows updates. NOTE: If connecting to a secured wireless network, enter the password for the wireless network access when prompted.
  • Page 14 Table 1. Locate Dell apps (continued) Resources Description performance. Get the most out of your Dell device with intelligent, personalized technology from MyDell. Following are the key features of MyDell: ● Application ● Audio ● Power ● Color and Display ● Presence detection For more information about how to use MyDell, see product guides at www.dell.com/support.

  • Page 15: Chapter 3: Specifications Of Precision 7875 Tower

    Specifications of Precision 7875 Tower Dimensions and weight The following table lists the height, width, depth, and weight of your Precision 7875 Tower. Table 2. Dimensions and weight  Description Values Height ● 17.42 in. (442.70 mm) ● 17.58 in. (446.60 mm) with rubber foot protruding Width ●...

  • Page 16: Chipset

    Chipset The following table lists the details of the chipset supported by your Precision 7875 Tower. Table 4. Chipset  Description Values Chipset AMD PROM21 Processor PRO 695   DRAM bus width 64-bit Flash EPROM 32 MB + 4 MB PCIe bus Up to Gen 5.0...

  • Page 17: Memory Matrix

    ● 1536 GB: 6 x 256 GB, DDR5, 4800 MT/s, ECC ● 2048 GB: 8 x 256 GB, DDR5, 4800 MT/s, ECC Memory matrix The following table lists the memory configurations supported on your Precision 7875 Tower. Table 6. Memory matrix  Config...

  • Page 18: External Ports

    256 GB 256 GB 256 GB 256 GB DDR4 External ports The following table lists the external ports of your Precision 7875 Tower. Table 7. External ports  Description Values Network port ● One RJ45 Ethernet port, 1 G (rear) ● One RJ45 Ethernet port, 10 G (rear)

  • Page 19: Internal Slots

    Transfer rate ● Realtek RTL8111-EPP, 1G ● Marvell AQC113-B1-C, 10G Wireless module The following table lists the Wireless Local Area Network (WLAN) module that is supported on your Precision 7875 Tower. Table 10. Wireless module specifications  Description Values Model number...

  • Page 20: Audio

    The version of the Bluetooth wireless card may vary depending on the operating system that is installed on your computer. Audio The following table lists the audio specifications of your Precision 7875 Tower. Table 11. Audio specifications  Description Values Audio type...
  • Page 21 PCIe Gen4 x4 NVMe 256 GB 8x DVD-ROM, slimline SATA 1, up to 1.5 Gbps 8x DVD±RW, slimline SATA 1, up to 1.5 Gbps 16x Half Height DVD ± RW SATA 1, up to 1.5 Gbps Specifications of Precision 7875 Tower...

  • Page 22: Storage Matrix

    Figure 8. Storage matrix configurations Redundant Array of Independent Disks (RAID) For optimal performance when configuring drives as a RAID volume, Dell Technologies recommends drive models that are identical. RAID 0 (Striped, Performance) volumes benefit from higher performance when drives are matched because the data is split across multiple drives: any IO operations with block sizes larger than the stripe size will split the I/O and become constrained by the slowest of the drives.

  • Page 23: Media-Card Reader

    RAID volume without incurring the additional penalties when one or more drives in the volume are lower performing. Precision 7875 Tower supports RAID with more than one hard drive configuration. Media-card reader The following table lists the media cards supported by your Precision 7875 Tower. Table 13. Media-card reader specifications  Description Values Media-card type One SD-card 6.0 slot...

  • Page 24: Power Supply Connector

    Storage -40°C to 70°C (-40°F to 158°F) -40°C to 70°C (-40°F to 158°F) Power supply connector The following table lists the Power supply connector specifications of your Precision 7875 Tower. Table 15. Power supply connector  Description Values 1350 W (Platinum) ●...

  • Page 25: Video Port Resolution

    GDDR6 AMD Radeon Pro W6300 2 GB GDDR6 Video port resolution The following table lists the video port resolution for your Precision 7875 Tower. Table 17. Video port resolution  Graphics card Video ports Maximum supported resolution NVIDIA RTX 6000 Ada Generation...

  • Page 26: Hardware Security

    AMD Radeon Pro W6300 Two DisplayPort 1.4 ports 7680 x 4320 @ 60 Hz Hardware security The following table lists the hardware security of your Precision 7875 Tower. Table 18. Hardware security   Hardware security TPM 2.0 Discrete Hardware TPM localization TPM OS dependency Factory Test Image with third-party solutions.

  • Page 27: Operating And Storage Environment

    This section details the Dell Optimizer specifications of your Precision 7875 Tower. Dell Optimizer is a software application that intelligently optimizes the performance of your system by using artificial intelligence and machine learning. Dell Optimizer dynamically configures your system settings to optimize the performance of your applications.

  • Page 28: Dell Low Blue Light Display

    ● Locks computer when walks away for enhanced security ● Intelligently shows alerts ● Updates automatically to minimize disruption For more information about configuring and using these features, search for the Dell Optimizer User Guide at www.dell.com/ support. Dell low blue light display...

  • Page 29: Chapter 4: Working Inside Your Computer

    You should only perform troubleshooting and repairs as authorized or directed by the Dell technical assistance team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the safety instructions that is shipped with the product or at www.dell.com/regulatory_compliance.

  • Page 30: Safety Precautions

    ESD protection is an increasing concern. Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable.

  • Page 31: Esd Field Service Kit

    Always place parts in your hand, on the ESD mat, in the system, or inside an anti-static bag. ● Transporting Sensitive Components – When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport. Working inside your computer...

  • Page 32: Transporting Sensitive Components

    Transporting sensitive components When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.

  • Page 33: Screw List

    ● Phillips screwdriver #0 ● Phillips screwdriver #1 ● Phillips screwdriver #2 ● Torx #20 (T20) screwdriver ● Plastic scribe Screw list NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box.
  • Page 34 Table 22. Screw list (continued) Component Screw type Quantity Screw image ● M2x3.5 ● Rear-fan assembly #6-32 Intrusion switch #6-32 Front bottom air shroud Rear bottom air shroud Hard-drive fan assembly NVMe-fan assembly (optional) NVMe-backplane assembly (optional) Heat sink Captive: Torx T20 Processor Captive: Torx T20 Internal hard drive cage...

  • Page 35: Major Components Of Precision 7875 Tower

    Major components of Precision 7875 Tower The following image shows the major components of Precision 7875 Tower. Figure 9. Major components of Precision 7875 Tower 1. Side cover 2. Power-supply unit cover 3. Power-supply unit 4. Heat sink 5. Intrusion switch 6.
  • Page 36 27. Air shroud NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options.

  • Page 37: Chapter 5: Removing And Installing Customer Replaceable Units (Crus)

    Removing and installing Customer Replaceable Units (CRUs) The replaceable components in this chapter are Customer Replaceable Units (CRUs). CAUTION: Customers can replace only the Customer Replaceable Units (CRUs) following the safety precautions and replacement procedures. NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Side cover Removing the side cover Prerequisites...

  • Page 38: Installing The Side Cover

    Steps 1. Unlock the side-panel latch using a Phillips screwdriver. 2. Press to open the latch of the side cover. 3. Pull the release latch to release the side cover from the computer. 4. Open the side cover at an angle and lift the cover away from the chassis. Installing the side cover Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 39: Front Bezel

    Front bezel Removing the front bezel Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. About this task The following images indicate the location of the front bezel and provide a visual representation of the removal procedure. Figure 12.

  • Page 40: Top Cover

    Figure 13. Installing the front bezel Steps 1. Position the front bezel to align the tabs on the bezel with the slots on the chassis. 2. Press the bezel until the tabs clicks into place. Next steps 1. Install the side cover.

  • Page 41: Installing The Top Cover

    Figure 14. Removing the top cover Steps 1. Remove the two (M3 screws) that secure the top cover to the chassis. 2. Slide and remove the top cover. Installing the top cover Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the top cover and provide a visual representation of the installation procedure.

  • Page 42: Front I/O Bracket

    Figure 15. Installing the top cover Steps 1. Slide and align the tabs on the top cover with the slots on the chassis. 2. Press the top cover back towards the top of the computer to secure it. 3. Replace the two (M3) screws to secure the top cover to the chassis. Next steps 1.

  • Page 43: Installing The Front I/O Bracket

    About this task The following images indicate the location of the front I/O bracket and provide a visual representation of the removal procedure. Figure 16. Removing the front I/O bracket Steps 1. Loosen the thumbscrew (M3x5) that secures the front I/O bracket to the chassis. 2.

  • Page 44: Front Bezel - Hard Drive

    Figure 17. Installing the front I/O bracket Steps 1. Align and slide the front I/O bracket into its slot on the chassis. 2. Tighten the thumbscrew (M3x5) to secure the front I/O bracket to the chassis. Next steps 1. Install the front bezel.

  • Page 45: Installing The Front Bezel With Hard Drive

    Figure 18. Removing the front bezel with hard drive Steps 1. Push the latch to unlock the bezel from the chassis. 2. Slide and remove the bezel from the computer. Installing the front bezel with hard drive Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the front bezel with hard drive and provide a visual representation of the installation procedure.

  • Page 46: Removing The Lockable Front Bezel For Hard Drive

    Steps 1. Position the front bezel to align the tabs on the bezel with the slots on the chassis. 2. Press the bezel until the tabs clicks into place. 3. Slide the latch to lock the bezel to the chassis. Next steps 1.

  • Page 47: Installing The Lockable Front Bezel For The Hard Drive

    Steps 1. Insert the key into the keyhole. 2. Rotate the key 90 degrees clockwise to unlock the bezel. 3. Remove the key from the bezel. Note: Perform step 1 to step 3, to remove second lockable front bezel for the hard drive (if applicable). Installing the lockable front bezel for the hard drive Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 48: External Storage Flex Bay (Hard Drive)

    Before working inside your computer. NOTE: Precision 7875 Tower can support two external 2.5-inch hard-drive assemblies. About this task The following images indicate the location of the external 2.5-inch hard-drive assembly and provide a visual representation of the removal procedure.

  • Page 49: Removing A 2.5-Inch Hard Drive From The External Hard-Drive Assembly

    Removing a 2.5-inch hard drive from the external hard-drive assembly Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the external 2.5-inch hard-drive assembly About this task The following images indicate the location of a 2.5-inch hard-drive in the external hard-drive assembly and provide a visual representation of the removal procedure.

  • Page 50: Installing The External 2.5-Inch Hard-Drive Assembly

    About this task The following images indicate the location of the external 2.5-inch hard-drive assembly and provide a visual representation of the installation procedure. NOTE: Precision 7875 Tower can support two external 2.5-inch hard-drive assemblies. Removing and installing Customer Replaceable Units (CRUs)

  • Page 51: Removing The External 3.5-Inch Hard-Drive Assembly

    Before working inside your computer. NOTE: Precision 7875 Tower can support two external 3.5-inch hard-drive assemblies. About this task The following images indicate the location of the external 3.5-inch hard-drive assembly and provide a visual representation of the removal procedure.

  • Page 52: Removing A 3.5-Inch Hard Drive From The External Hard-Drive Assembly

    Figure 26. Removing the external 3.5-inch hard-drive assembly Steps 1. Push the release button on the upper external flex bay bracket to open the release latch. 2. Hold the release latch and slide the hard-drive assembly out of the upper external flex bay slot. NOTE: Perform step 1 to step 2, to remove the second external 3.5-inch hard-drive assembly from the lower bay (if applicable).

  • Page 53: Installing A 3.5-Inch Hard Drive From The External Hard-Drive Assembly

    Figure 27. Removing a 3.5-inch hard drive from the external hard-drive assembly Steps 1. Pry the sides of the external hard-drive bracket to release the pins on the bracket from the slots on the hard drive. Lift and remove the hard drive off the external hard-drive bracket. 2.

  • Page 54: Installing The External 3.5-Inch Hard-Drive Assembly

    About this task The following images indicate the location of the external 3.5-inch hard-drive assembly and provide a visual representation of the installation procedure. NOTE: Precision 7875 Tower can support two external 3.5-inch hard-drive assemblies. Removing and installing Customer Replaceable Units (CRUs)

  • Page 55: External Solid-State Drive Cage

    Figure 29. Installing the external 3.5-inch hard-drive assembly Steps 1. Slide and insert the hard-drive assembly into the upper external flex bay slot. 2. Close the release latch to secure the hard-drive assembly in place. NOTE: Perform step 1 to step 2 to install the second external 3.5-inch hard-drive assembly into the lower bay (if applicable).

  • Page 56: Installing The External Solid-State Drive Cage

    Figure 30. Removing the external solid-state drive cage Steps 1. Using a screwdriver, push the release button on the upper external flex bay slot to release the SSD cage. 2. Pull the external SSD cage out of the upper external flex bay slot. Installing the external solid-state drive cage Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 57: External Storage Flex Bay (Solid-State Drive)

    Figure 31. Installing the external solid-state drive cage Steps Slide and insert the external solid-state drive cage into the upper external flex bay slot. Next steps 1. Follow the procedure in After working inside your computer. External storage flex bay (solid-state drive) Removing the external solid-state drive assembly Prerequisites 1.

  • Page 58: Removing The External M.2 2230 Solid-State Drive

    Figure 32. Removing the external solid-state drive assembly Steps 1. Push the release button on the external flex bay bracket to open the release latch. 2. Hold the release latch and slide the solid-state drive assembly out of the external flex bay slot. Removing the external M.2 2230 solid-state drive Prerequisites 1.

  • Page 59: Installing The External M.2 2230 Solid-State Drive

    Figure 33. Removing the external M.2 2230 solid-state drive Steps 1. Remove the single (M3x6) screw and the two (M3x3) screws from the solid-state drive assembly. 2. Lift and remove the cover from the solid-state drive assembly. 3. Slide and remove the solid-state drive holder from the solid-state drive assembly. 4.

  • Page 60: Removing The External M.2 2280 Solid-State Drive

    Figure 34. Installing the external M.2 2230 solid-state drive Steps 1. Align the notch on the solid-state drive with the tab on the solid-state drive connector. 2. Insert the solid-state drive at a 45-degree angle into the slot on the solid-state drive assembly. 3.

  • Page 61: Installing The External M.2 2280 Solid State Drive

    Figure 35. Removing the external M.2 2280 solid-state drive Steps 1. Remove the single (M3x6) screw and the two (M3x3) screws from the solid-state drive assembly. 2. Lift and remove the cover from the solid-state drive assembly. 3. Slide and remove the solid-state drive from the solid-state drive assembly. Installing the external M.2 2280 solid state drive Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 62: Installing The External Solid-State Drive Assembly

    Figure 36. Installing the external M.2 2280 solid-state drive Steps 1. Align the notch on the solid state drive with the tab on the solid-state drive connector. 2. Insert the solid state drive at a 45-degree angle into the slot on the solid-state drive assembly. 3.

  • Page 63: Air Shroud

    Figure 37. Installing the external solid-state drive assembly Steps 1. Slide and insert the solid-state drive assembly into the external flex bay slot. 2. Push and close the release latch to secure the solid-state drive assembly in place. Next steps 1.

  • Page 64: Installing The Air Shroud

    Figure 38. Removing the air shroud Steps 1. Hold the air shroud at the gripping points. 2. Pull the air shroud upwards and out of the computer. Installing the air shroud Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. NOTE: Installing the air shroud connects the memory fan module as the memory fan module is integrated in the air shroud.

  • Page 65: Slim Optical-Drive

    Figure 39. Installing the air shroud Steps 1. Align the air shroud over the heat-sink and system board holding and seat it in the slot. 2. Press the air shroud down until the tabs click into place. Next steps 1. Install the side cover.

  • Page 66: Installing The Slim Optical-Drive

    About this task The following images indicate the location of the slim optical-drive and provide a visual representation of the removal procedure. Figure 40. Removing the slim optical-drive Steps 1. Push the slim optical-drive latch to release it from the flex bay. 2.

  • Page 67: Pcie Holder

    Figure 41. Installing the slim optical-drive Steps 1. Insert the slim optical-drive into the slot in the flex bay and push the slim optical-drive until it snaps into place. 2. Push the slim optical-drive until it snaps into place. Next steps 1.

  • Page 68: Installing The Pcie Holder

    Figure 42. Removing the PCIe holder Steps 1. Remove the PCIe-power cables from the slots on the PCIe holder. 2. Unroute the PCIe-power cables from the hooks on the chassis. 3. Push the PCIe holder lock into the unlock position. 4.

  • Page 69: Front Fan

    Figure 43. Installing the PCIe holder Steps 1. Align and place the PCIe holder on the slot over the front fan. 2. Push the PCIe holder lock into the lock position to secure the PCIe holder to the chassis. 3. Route the PCIe-power cables through the hooks on the chassis. 4.

  • Page 70: Installing The Front-Fan Assembly

    3. Remove the shroud. 4. Remove the PCIe holder. About this task The following images indicate the location of the front-fan assembly and provide a visual representation of the removal procedure. Figure 44. Removing the front-fan assembly Steps 1. Remove the single (M3) screw that secures the front-fan assembly to the chassis. 2.

  • Page 71: 3.5-Inch Hard-Drive Assembly

    Figure 45. Installing the front-fan assembly Steps 1. Align the tabs of the front-fan assembly with the slot on the chassis. 2. Insert the front-fan assembly at an angle into the slot in the chassis. 3. Install the single (M3) screw to secure the front-fan assembly to the chassis. 4.

  • Page 72: Removing The 3.5-Inch Hard-Drive Bracket

    Figure 46. Removing the 3.5-inch hard-drive assembly Steps 1. Press the securing tabs to release the 3.5-inch hard-drive assembly from the chassis. 2. Slide the 3.5-inch hard-drive assembly out of the hard-drive bracket. Removing the 3.5-inch hard-drive bracket Prerequisites 1. Follow the procedure in before working inside your computer.

  • Page 73: Installing The 3.5-Inch Hard-Drive Bracket

    Figure 47. Removing the 3.5-inch hard-drive bracket Steps 1. Pry the sides of the hard-drive bracket to release the tabs on the bracket from the slots on the hard drive. 2. Lift and remove the hard drive off the hard-drive bracket. Installing the 3.5-inch hard-drive bracket Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 74: Installing The 3.5-Inch Hard-Drive Assembly

    Figure 48. Installing the 3.5-inch hard-drive bracket Steps NOTE: If your hard-drive bracket was installed for 2.5-inch drive, the rubber grommets must be positioned to fit a 3.5-inch hard-drive. Place the hard drive into the hard-drive bracket and align the tabs on the bracket with the slots on the hard drive. 2.

  • Page 75: 2.5-Inch Hard-Drive Assembly

    Figure 49. Installing the 3.5-inch hard-drive assembly Steps Slide and insert the 3.5-inch hard-drive assembly into the slot on the hard-drive bracket. NOTE: Push the hard-drive assembly into the slot until it clicks into place, which indicates that the assembly is locked into position.

  • Page 76: Removing The 2.5-Inch Hard-Disk Drive Bracket

    Figure 50. Removing the 2.5-inch hard-drive assembly Steps 1. Press the securing tabs to release the 2.5-inch hard-drive assembly from the chassis. 2. Slide the 2.5-inch hard-drive assembly out of the hard-drive bracket. Removing the 2.5-inch hard-disk drive bracket Prerequisites 1.

  • Page 77: Installing The 2.5-Inch Hard-Drive Bracket

    Figure 51. Removing the 2.5-inch hard-disk drive bracket Steps 1. Pry the sides of the hard-drive bracket to release the tabs on the bracket from the slots on the hard drive. 2. Lift and remove the hard drive off the hard-drive bracket. Installing the 2.5-inch hard-drive bracket Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 78: Installing The 2.5-Inch Hard-Drive Assembly

    Figure 52. Installing the 2.5-inch hard-drive bracket Steps NOTE: If your hard-drive bracket was installed for a 3.5-inch drive, the rubber grommets must be positioned to fit a 2.5-inch hard-drive. Place the hard drive into the hard-drive bracket and align the tabs on the bracket with the slots on the hard drive. 2.

  • Page 79: Expansion Card

    The following images indicate the location of the UltraSpeed Duo card and provide a visual representation of the installation procedure. NOTE: Precision 7875 Tower supports only one UltraSpeed Duo card in slot 6, 5, or 4. Removing and installing Customer Replaceable Units (CRUs)
  • Page 80 Figure 54. Installing the UltraSpeed Duo card Steps 1. Push down the PCIe latch to open the PCIe door. 2. Slide and lift the PCIe filler from the PCIe slot. 3. Align and place the UltraSpeed Duo card into the expansion slot. 4.
  • Page 81 About this task The following images indicate the location of the UltraSpeed Duo solid state drive and provide a visual representation of the installation procedure. Figure 55. Installing the UltraSpeed Duo solid state drive Removing and installing Customer Replaceable Units (CRUs)
  • Page 82 Figure 56. Installing the UltraSpeed Duo solid state drive Figure 57. Installing the UltraSpeed Duo solid state drive Steps 1. Press the release latch to open the fan shroud. 2. Lift to open the fan shroud. 3. Loosen the two captive screws and lift the heat sink away from the UltraSpeed Duo card. 4.
  • Page 83 The following images indicate the location of the UltraSpeed Duo card and provide a visual representation of the removal procedure. NOTE: Precision 7875 Tower supports only one UltraSpeed Duo card in slot 6, 5, or 4. Removing and installing Customer Replaceable Units (CRUs)

  • Page 84: Ultraspeed Quad

    Figure 58. Removing the UltraSpeed Duo card Steps 1. Push the PCIe latch to open the PCIe door. 2. Lift and remove the UltraSpeed Duo card away from the expansion-card slot. 3. Slide the PCIe filler door down. 4. Lift and push the PCIe latch to close the PCIe door. UltraSpeed Quad Installing the UltraSpeed Quad card Prerequisites...
  • Page 85 The following images indicate the location of the UltraSpeed Quad card and provide a visual representation of the installation procedure. NOTE: Precision 7875 Tower supports only one UltraSpeed Quad card in slot 5. Figure 59. Installing the UltraSpeed Quad card Steps 1.
  • Page 86 Installing the UltraSpeed Quad M.2 2280 solid state drive Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of theUltraSpeed Quad M.2 2280 solid state drive and provide a visual representation of the installation procedure.
  • Page 87 Figure 61. Installing the UltraSpeed Quad M.2 2280 solid-state drive Figure 62. Installing the UltraSpeed Quad M.2 2280 solid-state drive Steps 1. Press the release latches to open the fan shroud. 2. Loosen the four captive screws and lift the heat sink away from the UltraSpeed Quad card. 3.
  • Page 88 9. Align the screw holes on the solid state drive heat sink with screw holes on the UltraSpeed Quad card. 10. Tighten the four captive screws that secure the solid state drive heat sink in place. 11. Close the fan shroud and press until it clicks in place. NOTE: The UltraSpeed Duo card can support four M.2 2280 solid state drives.
  • Page 89 Figure 63. Installing the UltraSpeed Quad M.2 2230 solid-state drive Removing and installing Customer Replaceable Units (CRUs)
  • Page 90 Figure 64. Installing the UltraSpeed Quad M.2 2230 solid-state drive Removing and installing Customer Replaceable Units (CRUs)
  • Page 91 Figure 65. Installing the UltraSpeed Quad M.2 2230 solid-state drive Steps 1. Press the release latches to open the fan shroud. 2. Loosen the four captive screws and lift the heat sink away from the UltraSpeed Quad card. 3. Remove the screw (M2x3) from the UltraSpeed Quad card. 4.
  • Page 92 The following images indicate the location of the UltraSpeed Quad card and provide a visual representation of the removal procedure. NOTE: Precision 7875 Tower supports only one UltraSpeed Quad card in slot 5. Figure 66. Removing the UltraSpeed Quad card Steps 1.

  • Page 93: Serial Card

    The following images indicate the location of the serial card and provide a visual representation of the installation procedure. NOTE: Precision 7875 Tower supports only two serial cards in slots 6, 5, 4, 3, or 1. Figure 67. Installing the serial card Steps 1.
  • Page 94 The following images indicate the location of the serial card and provide a visual representation of the removal procedure. NOTE: Precision 7875 Tower supports only two serial cards in slots 6, 5, 4, 3, or 1. Figure 68. Removing the serial card...

  • Page 95: Graphics Card

    The following images indicate the location of the non-powered graphic card and provide a visual representation of the installation procedure. NOTE: Precision 7875 Tower supports only two graphic cards in slots 2 and 5. NOTE: NVIDIA GeForce RTX 4090 can only be installed in slot 2 due to installation limitations.
  • Page 96 Figure 69. Installing the non-powered graphic card Steps 1. Push down the PCIe latch to open the PCIe door. 2. Slide and lift the PCIe filler from the PCIe slot. 3. Align and place the non-powered graphic card into the expansion slot. 4.
  • Page 97 The following images indicate the location of the non-powered graphic card and provide a visual representation of the removal procedure. NOTE: Precision 7875 Tower supports only two graphic cards in slots 2 and 5. NOTE: NVIDIA GeForce RTX 4090 can only be installed in slot 2 due to installation limitations.

  • Page 98: Network Interface Card (Nic)

    The following images indicate the location of the 10 G network adapter and provide a visual representation of the installation procedure. NOTE: Precision 7875 Tower supports only one 10 G network adapter in slots 6, 5, 4, or 1. Figure 71. Installing the 10G network adapter Steps 1.
  • Page 99 The following images indicate the location of the 10G network adapter and provide a visual representation of the removal procedure. NOTE: Precision 7875 Tower supports only one 10G network adapter in slots 6, 5, 4, or 1. Removing and installing Customer Replaceable Units (CRUs)

  • Page 100: M.2 Solid-State Drive

    Figure 72. Removing the 10G NIC Steps 1. Push the PCIe latch down and open the PCIe door. 2. Lift and remove the 10G network card away from the expansion-card slot. 3. Slide the PCIe filler door down and push the PCIe latch to close the PCIe door. M.2 solid-state drive Removing the M.2 2230 PCIe solid state drive Prerequisites...

  • Page 101: Installing The M.2 2230 Pcie Solid State Drive

    About this task The following images indicate the location of the M.2 2230 solid state drive and provide a visual representation of the removal procedure. Figure 73. Removing the M.2 2230 PCIe solid state drive Steps 1. Loosen the four captive screws that secure the M.2 heat sink to the system board. 2.

  • Page 102: Removing The M.2 2280 Pcie Solid State Drive

    Figure 74. Installing the M.2 2230 PCIe solid state drive Steps 1. Align the notch on the solid state drive with the tab on the solid state drive connector. 2. Insert the solid state drive at a 45-degree angle into the slot on the system board. NOTE: When replacing a M.2 2280 solid state drive from a M.2 2230 solid state drive, ensure to move the standoff nut to the M.2 2230 solid state drive slot position.

  • Page 103: Installing The M.2 2280 Pcie Solid State Drive

    Figure 75. Removing the M.2 2280 PCIe solid state drive Steps 1. Loosen the four captive screws that secure the M.2 heat sink to the system board. 2. Lift and remove the M.2 heat sink from the computer. 3. Remove the single (M2x3.5) screw that secures the solid state drive to the system board. 4.

  • Page 104: Rear Fans

    Figure 76. Installing the M.2 2280 PCIe solid-state drive Steps 1. Align the notch on the solid state drive with the tab on the solid state drive connector. 2. Insert the solid state drive at a 45-degree angle into the slot on the system board. NOTE: When replacing a M.2 2280 solid state drive with a M.2 2230 solid state drive, ensure to move the standoff nut to the M.2 2230 solid state drive slot position.

  • Page 105: Removing Rear Fan

    About this task The following images indicate the location of the rear-fan assembly and provide a visual representation of the removal procedure. Figure 77. Removing the rear-fan assembly Steps 1. Remove the two (#6-32) screws that secure the rear-fan assembly to the chassis. 2.

  • Page 106: Installing The Rear Fan

    Figure 78. Removing rear fan Steps 1. Unroute the fan cable from the routing guide on the fan assembly. 2. Locate the position of rubber grommets. 3. Gently pull the rubber grommets inwards to release the fan from the fan cage. 4.

  • Page 107: Installing The Rear-Fan Assembly

    Figure 79. Installing the rear fan Steps 1. Place the fan inside the fan cage. 2. Route the fan cable through the slot on the fan cage. 3. Align the slots on the fan with the rubber grommets on the fan cage. 4.

  • Page 108: Intrusion Switch

    Figure 80. Installing the rear-fan assembly Steps 1. Align the tabs on the rear-fan assembly with the slots on the chassis. 2. Insert the rear-fan assembly at an angle into the slot in the chassis. 3. Connect the two fan cables to the connectors on the system board. 4.

  • Page 109: Installing The Intrusion Switch

    3. Remove the shroud. About this task The following images indicate the location of the intrusion switch and provide a visual representation of the removal procedure. Figure 81. Removing the intrusion switch Steps 1. Disconnect the intrusion-switch cable from the connector on the system board. 2.

  • Page 110: Speaker

    Figure 82. Installing the intrusion switch Steps 1. Insert the intrusion switch into its slot in the chassis and secure it into place with the single (#6-32) screw. 2. Route the speaker-dongle cable through the routing guide on the intrusion switch. 3.

  • Page 111: Installing The Speaker

    Figure 83. Removing the speaker Steps 1. Disconnect the speaker cable from the connector on the system board. 2. Unroute the speaker-dongle cable from the routing guide on the intrusion switch. 3. Disconnect the speaker cable from the speaker-dongle cable. 4.

  • Page 112: Coin-Cell Battery

    Figure 84. Installing the speaker Steps 1. Route the speaker cable through the slot on the chassis. 2. Press the tabs on the speaker and push the speaker into the slot on the chassis until it snaps into place. 3. Connect the speaker cable to the speaker dongle cable. 4.

  • Page 113: Installing The Coin-Cell Battery

    Figure 85. Removing the coin-cell battery Steps 1. Using a plastic scribe, push the coin-cell battery securing-clip on the coin-cell battery socket to release the coin-cell battery. 2. Remove the coin-cell battery from the computer. Installing the coin-cell battery Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 114: Memory Modules

    The following image indicates the location of the memory module and provides a visual representation of the removal procedure. NOTE: Precision 7875 Tower supports eight DIMM slots with a memory size of up to 256 GB per slot. Removing and installing Customer Replaceable Units (CRUs)

  • Page 115: Installing The Memory Module

    Figure 87. Removing the memory module Steps 1. Pull the securing clips from both sides of the memory module until the memory module pops up. 2. Slide and remove the memory module from the memory-module slot. Repeat step 1 and step 2 for rest of memory module slots (if applicable). Installing the memory module Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 116: Bottom Air Shroud

    Figure 88. Installing the memory module Steps 1. Align the notch and slide the memory module until it clicks into place. 2. Slide the memory module firmly into the slot at an angle and press the memory module down until it clicks into place. NOTE: If you do not hear the click, remove the memory module and reinstall it.

  • Page 117: Installing The Bottom Air Shroud

    Figure 89. Removing the bottom air shroud Steps 1. Loosen the three (M3) captive screws securing the bottom air shroud to the system board. 2. Lift the bottom air shroud from the computer. Installing the bottom air shroud Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the bottom air shroud and provide a visual representation of the installation procedure.

  • Page 118: Removing The Rear Bottom Air Shroud

    Figure 90. Installing the bottom air shroud Steps 1. Place the bottom air shroud over the voltage heat sink regulator. 2. Align the screw holes of the bottom air shroud with the holes on the system board. 3. Tighten the three (M3) captive screws to secure the bottom air shroud to the system board. Next steps 1.

  • Page 119: Installing The Rear Bottom Air Shroud

    Figure 91. Removing the rear bottom air shroud Steps 1. Remove the two (M3) screws that secure the rear bottom air shroud to the system board. 2. Remove the rear bottom air shroud out of the computer. Installing the rear bottom air shroud Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 120 Figure 92. Installing the rear bottom air shroud Steps 1. Place the rear bottom air shroud on the system board. 2. Align the screw holes of the rear bottom air shroud with the holes on the system board. 3. Replace the two (M3) screws to secure the rear bottom air shroud to the system board. Next steps 1.

  • Page 121: Chapter 6: Removing And Installing Field Replaceable Units (Frus)

    To avoid any potential damage to the component or loss of data, ensure that an authorized service technician replaces the Field Replaceable Units (FRUs). CAUTION: Dell Technologies recommends that this set of repairs, if needed, to be conducted by trained technical repair specialists. CAUTION: As a reminder, your warranty does not cover damages that may occur during the courses of FRU repairs that are not authorized by Dell Technologies.

  • Page 122: Installing The Hard-Drive Fan Assembly

    Figure 93. Removing the hard-drive fan assembly Steps 1. Disconnect the SATA power cables, thermal sensor cable, and fan hard drive assembly cable from the connectors on the system board. 2. Lift the cover of the bottom air shroud to unroute the cables. 3.

  • Page 123: Nvme-Fan Assembly (Optional)

    Figure 94. Installing the hard-drive fan assembly Steps 1. Slide the hard-drive fan assembly into the slot on the chassis. 2. Tighten the four (M3) captive screws to secure the hard-drive fan assembly to the chassis and system board. 3. Lift the cover of the bottom air shroud to route the cables. 4.

  • Page 124: Installing The Nvme-Fan Assembly (Optional)

    About this task The following images indicate the location of the NVMe-fan assembly and provide a visual representation of the removal procedure. Figure 95. Removing the NVMe-fan assembly (optional) Steps 1. Disconnect the HDD0 cable from the connector on the backplane. 2.

  • Page 125: Removing The Nvme-Backplane Assembly (Optional)

    Figure 96. Installing the NVMe-fan assembly (optional) Steps 1. Slide and insert the NVMe-fan assembly along with the cable into its slot on the chassis. 2. Replace the single (M3) screw to secure the NVMe-fan assembly to the backplane. 3. Open the lid of the bottom-air shroud cover to route the cable inside. 4.
  • Page 126 About this task The following images indicate the location of the NVMe-backplane assembly and provide a visual representation of the removal procedure. Figure 97. Removing the NVMe-backplane assembly (optional) Figure 98. Removing the NVMe-backplane assembly (optional) Steps 1. Disconnect the NVMe cable from the connector on the system board. Removing and installing Field Replaceable Units (FRUs)

  • Page 127: Installing The Nvme-Backplane Assembly (Optional)

    2. Open the plastic clips on cable holder. 3. Unroute the NVMe cable through the plastic clips and close the plastic clips. 4. Disconnect the SATA power, fan cable, and thermal-sensor cable from its connector on the system board. 5. Open the lid of the bottom-air shroud cover to unroute the cables from inside. 6.

  • Page 128: Heat Sink

    Figure 100. Installing the NVMe-backplane assembly (optional) Steps 1. Slide and insert the single NVMe-backplane assembly along with the NVMe cable, SATA power cable, fan cable, and thermal-sensor cable into its slot on the chassis. 2. Using a Phillips screwdriver, tighten the two (M3) screws to secure the NVMe-backplane assembly to the chassis. 3.

  • Page 129: Installing The Heat-Sink Assembly

    NOTE: The image of the heat-sink assembly may vary depending on the configuration ordered. Figure 101. Removing the heat-sink assembly Steps 1. Using a Torx T20 screwdriver, in reverse sequential order (4->3->2->1), loosen the four captive screws that secure the heat-sink assembly to the system board.

  • Page 130: Processor

    Figure 102. Installing the heat-sink assembly Steps 1. Align the screws of the heat-sink assembly with the screw holders on the system board. 2. In sequential order (1->2->3->4), tighten the captive screws to secure the heat-sink assembly to the system board. NOTE: The numbering and order in which to tighten the screws is printed on the heat-sink assembly.

  • Page 131: Installing The Processor

    Figure 103. Removing the processor Steps 1. Using a Torx T20 screwdriver, in reverse sequential order (3->2->1), loosen the three captive screws that secure the force frame to the system board. NOTE: The numbering and order in which to loosen the screws is printed on the force frame. 2.
  • Page 132 Figure 104. Installing the processor Steps 1. Place the processor into the CPU carrier. 2. Slide the CPU carrier along with the processor by holding the two blue latch points on the rail frame and rotating it to the horizontal position. NOTE: Ensure the carrier frame clicks into place in the rail frame.

  • Page 133: Internal Hard-Drive Cage

    Internal hard-drive cage Removing the internal hard-drive cage Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the shroud. 4. Remove the 2.5-inch hard-drive assembly. 5. Remove the 3.5-inch hard-drive assembly. 6.

  • Page 134: Voltage-Regulator Heat Sink

    About this task The following images indicate the location of the internal hard-drive cage and provide a visual representation of the installation procedure. Figure 106. Installing the internal hard-drive cage Steps 1. Slide and insert the internal hard-drive cage into the slot on the chassis. 2.

  • Page 135: Installing The Voltage-Regulator Heat Sink - Location 1

    2. Remove the side cover. 3. Remove the shroud. About this task The following image indicates the location of the voltage-regulator heat sink and provides a visual representation of the removal procedure. Figure 107. Removing the voltage-regulator heat sink - Location 1 Steps 1.

  • Page 136: Removing The Voltage-Regulator Heat Sink - Location 2

    Figure 108. Installing the voltage-regulator heat sink - Location 1 Steps 1. Align the screw holes on the voltage-regulator heat sink to the screw holes on the system board. 2. Tighten the three (M3) captive screws to secure the voltage-regulator heat sink to the system board. Next steps 1.

  • Page 137: Installing The Voltage-Regulator Heat Sink - Location 2

    Figure 109. Removing the voltage-regulator heat sink - Location 2 Steps 1. Loosen the two captive screws that secure the voltage-regulator heat sink to the system board. 2. Lift the heat sink off the system board. Installing the voltage-regulator heat sink - Location 2 Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 138: Power-Supply Unit

    Figure 110. Installing the voltage-regulator heat sink - Location 2 Steps 1. Align the screw holes on the voltage-regulator heat sink to the screw holes on the system board. 2. Tighten the two captive screws to secure the voltage-regulator heat sink to the system board. Next steps 1.
  • Page 139 Figure 111. Removing the power-supply unit Removing and installing Field Replaceable Units (FRUs)
  • Page 140 Figure 112. Removing the power-supply unit Figure 113. Removing the power-supply unit Steps 1. Lay the computer on the right side. 2. ● For 1000 W PSU: Disconnect two of the 4-pin ATX CPU power cables from the ATX CPU1 and ATX CPU2 connectors on the system board.

  • Page 141: Installing The Power-Supply Unit

    10. Lift the power-supply unit off the chassis. Installing the power-supply unit Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. WARNING: The cables and ports on the back of the power-supply unit are color-coded to indicate the different power wattage.
  • Page 142 Figure 115. Installing the power-supply unit Figure 116. Installing the power-supply unit Steps 1. Slide the power-supply unit into the chassis until the securing tab snaps into position. 2. Replace the four (#6x32) screws to secure the power-supply unit to the chassis. Removing and installing Field Replaceable Units (FRUs)

  • Page 143: System Board

    3. Route the PCIe power-cables and SATA power-cables through the routing guides. 4. Connect the PCIe power-cables to the slots on the PCIe holder. 5. Connect the SATA power-cables to the ATX SYS connector on the system board. NOTE: The location of the connectors on the system-board is described in System-board callouts.
  • Page 144 Table 23. Precision 7875 Tower system board callouts  Connector Description ATX CPU1 4-pin processor power connector ATX CPU2 4-pin processor power connector NVME1 NVMe connector for externally facing M.2 flex bay drive NVME0 NVMe connector for externally facing M.2 flex bay drive...

  • Page 145: Removing The System Board

    Removing the system board Prerequisites 1. Follow the procedure in Before working inside your computer. NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup program after you replace the system board. NOTE: Replacing the system board removes any changes that you have made to the BIOS using the BIOS setup program.
  • Page 146 Figure 118. Removing the system board Figure 119. Removing the system board Removing and installing Field Replaceable Units (FRUs)

  • Page 147: Installing The System Board

    Steps 1. Remove the two (M3) screws that secure the rear bottom air shroud to the system board. 2. Remove the 12 (#6-32) screws that secure the system board to the chassis. 3. Lift the system board at an angle and remove the system board off the chassis. Installing the system board Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 148 Figure 121. Installing the system board Steps 1. Align and lower the system board into the system until the connectors at the back of the system board align with the slots on the chassis, and the screw holes on the system board align with the standoffs on the system. 2.
  • Page 149 NOTE: Replacing the system board removes any changes that you have made to the BIOS using the BIOS setup program. You must make the appropriate changes again after you replace the system board. Removing and installing Field Replaceable Units (FRUs)

  • Page 150: Chapter 7: Software

    ● Windows 11 SV2 ● Ubuntu 22.04 LTS, 64-bit ● Red Hat Enterprise Linux 9.3 Drivers and downloads When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Base article, Drivers and Downloads FAQs 000123347. Software...

  • Page 151: Chapter 8: Technology And Components

    Technology and components NOTE: Instructions provided in this section are applicable on computers shipped with Windows operating system. Windows is factory-installed with this computer. NVIDIA RTX 6000 Ada Generation, 48 GB GDDR6 with The following table lists the NVIDIA RTX 6000 Ada Generation specifications. Table 24.

  • Page 152: Nvidia Rtx A4000, 16 Gb Gddr6

    Table 25. NVIDIA RTX A6000 specifications (continued) Feature Values DirectX 12 Shader model 5.17 Open CL Open GL GPU memory interface 384 bits PCIe bus PCIe 4.0 x16 Display support Four DP 1.2 Certified, 1.3/1,4 Ready Graphics memory configuration 48 GB, GDDR6 Graphics memory clock speed 8001 MHz Active fan sink...

  • Page 153: Nvidia Rtx A2000, 12 Gb Gddr6

    Table 26. NVIDIA RTX A4000 specifications (continued) Feature Values PCB solder mask Bracket form factor Full Height Maximum resolution 7680 x 4320 x 24 bpp at 120 Hz (Requires two DPs 1.4a and DSC) Power consumption 140 W NVIDIA RTX A2000, 12 GB GDDR6 The following table lists the NVIDIA RTX A2000 specifications.

  • Page 154: Nvidia T400, 4 Gb Gddr6

    Table 28. NVIDIA T1000 specifications (continued) Feature Values Shader model 5.17 Open CL Open GL GPU memory interface 128 bits PCIe bus PCIe 3.0 x16 Display support Four mini-DP 1.2 Certified, 1.3/1,4 Ready Graphics memory configuration 8 GB, GDDR6 Graphics memory clock speed 5001 MHz Active fan sink 4-pin embedded fan controller...

  • Page 155: Nvidia Geforce Rtx 4090, 24 Gb, Gddr6

    Table 29. NVIDIA T400 specifications (continued) Feature Values Bracket form factor Low Profile Maximum resolution 7680 x 4320 x 24 bpp at 120 Hz (Requires two DPs 1.4a & DSC) Power consumption 30 W NVIDIA GeForce RTX 4090, 24 GB, GDDR6 The following table lists the NVIDIA GeForce RTX 4090 specifications.

  • Page 156: Amd Radeon Pro W7500, 8 Gb Gddr6

    Table 31. AMD Radeon Pro W7600 specifications (continued) Feature Values GPU memory interface 128-bit PCIe bus Gen 4 (x8 lanes) Display support x4 DP 2.1 Graphics memory configuration 8 GB DDR6 Graphics memory clock speed 2250 MHz Active fan sink Fan Controller Embedded (4 pin) Slot number Single slot PCB form factor...

  • Page 157: Amd Radeon Pro W6400, 4 Gb Gddr6

    AMD Radeon Pro W6400, 4 GB GDDR6 The following table lists the AMD Radeon Pro W6400 specifications. Table 33. AMD Radeon Pro W6400 specifications  Feature Values GPU frequency 1923 MHz (base clock) DirectX 12 12.0 Ultimate Shader model Open CL Open GL GPU memory interface 64-bit...
  • Page 158 Table 34. AMD Radeon Pro W6300 specifications (continued) Feature Values Active fan sink Fan Controller Embedded (4 pin) Slot number Single slot PCB form factor Full Height, Half Length PCB layer PCB solder mask Bracket form factor Full Height Maximum resolution 7680 x 4320 @60 Hz Power consumption 35 W...

  • Page 159: Chapter 9: Bios Setup

    BIOS Setup CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup. Certain changes can make your computer work incorrectly. NOTE: Depending on the computer and its installed devices, the items listed in this section may or may not be displayed. NOTE: Before you change the settings in BIOS Setup, it is recommended that you note down the original settings for future reference.

  • Page 160: F12 One Time Boot Menu

    Depending on your system and its installed devices, the items that are listed in this section may or may not appear. Table 36. System setup options—System information menu  Overview Precision 7875 Tower BIOS Version Displays the BIOS version number. Service Tag Displays the Service Tag of the system.
  • Page 161 Enables the computer to boot using only validated boot software. By default, the Enable Secure Boot option is enabled. For additional security, Dell Technologies recommends keeping the Secure Boot option enabled to ensure that the UEFI firmware validates the operating system during the boot process.
  • Page 162 By default, the Enable Microsoft UEFI CA option is enabled. For additional security, Dell Technologies recommends keeping the Microsoft UEFI CA option enabled to ensure the broadest compatibility with devices and operating systems.
  • Page 163 Table 39. System setup options—Storage menu  Storage SATA/NVMe Operation SATA/NVMe Operation Set the operating mode of the integrated storage device controller. By default, the ACHI/NVMe option is enabled. Storage interface Port Enablement This page allows you to enable the onboard drives. By default, the all options are enabled.
  • Page 164 Table 40. System setup options—Display menu  Display Multi-Display Enable or disables Multi-Display, NOTE: This feature has to be enabled for Windows 7 or later, and not applciable to other operating systems. By default, Enable Multi-Display is enabled. Primary Video Slot Determines which video controller to be the primary display when multiple controllers are available in the system.
  • Page 165 Disabling the Key Storage Enable option restricts the ability of TPM to store owner's data. By default, the Key Storage Enable option is enabled. For additional security, Dell Technologies recommends keeping the Key Storage Enable option enabled. NOTE: When disabled, this feature may cause compatibility issues or loss of functionality in some operating systems.
  • Page 166 Table 43. System setup options—Security menu (continued) Security By default, the Clear option is disabled. Dell Technologies recommends enabling the Clear option only when TPM data is required to be cleared. PPI Bypass for Clear Commands Controls the TPM Physical Presence Interface (PPI).
  • Page 167 Password prompt. ● The system password is not prompted when the computer resumes from standby mode. Dell Technologies recommends using the system password in situations where it is likely that a system may be lost or stolen. M.2 PCIe SSD-1 Set, change, or delete the M.2 PCIe SSD-1 password.
  • Page 168 This gives an administrator control over the BIOS settings but enables an end user to provide their own password. By default, the Allow Non-Admin Password Changes option is disabled. For additional security, Dell Technologies recommends keeping the Allow Non- Admin Password Changes option disabled. Admin Setup Lockout...
  • Page 169 Dell Auto operating system Recovery Controls the automatic boot flow for SupportAssist System Resolution Console Threshold and for Dell operating system Recovery Tool. By default, the threshold value is set to 2. Table 46. System setup options—System Management menu  System Management Service Tag Displays the Service Tag of the system.
  • Page 170 This option is not available when the virtualization setting for IOMMU is disabled (VT-d/AMD Vi). By default, the Enable Pre-Boot DMA Support option is enabled. For additional security, Dell Technologies recommends keeping the Enable Pre-Boot DMA Support option enabled. NOTE: This option is provided only for compatibility purposes, since some older hardware is not DMA capable.
  • Page 171 Table 50. System setup options—Performance menu  Performance Enable Dell RMT Enable or disable Dell Reliable Memory Technology (RMT) to identify and isolate memory errors in the system RAM. By default, the option is enabled. Clear Dell RMT Log By default, the option is disabled.

  • Page 172: Updating The Bios

    Updating the BIOS in Windows to download the latest BIOS setup program file. 2. Create a bootable USB drive. For more information, search in the Knowledge Base Resource at www.dell.com/support. 3. Copy the BIOS setup program file to the bootable USB drive.

  • Page 173: Updating The Bios From The F12 One-Time Boot Menu

    One-Time boot menu on the computer. Most of the Dell computers built after 2012 have this capability, and you can confirm by booting your computer to the F12 One-Time Boot Menu to see if BIOS FLASH UPDATE is listed as a boot option for your computer. If the option is listed, then the BIOS supports this BIOS update option.

  • Page 174: Assigning A System Setup Password

    CAUTION: The password features provide a basic level of security for the data on your computer. CAUTION: Anyone can access the data that is stored on your computer if it is not locked and left unattended. NOTE: System and setup password feature is disabled. Assigning a System Setup password Prerequisites You can assign a new System or Admin Password only when the status is in Not Set.

  • Page 175: Clearing Cmos Settings

    Clearing BIOS (System Setup) and System passwords About this task To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell. NOTE: For information on how to reset Windows or application passwords, refer to the documentation accompanying Windows or your application.

  • Page 176: Chapter 10: Troubleshooting

    Check diagnostics About this task SupportAssist diagnostics (also known as system diagnostics) performs a complete check of your hardware. The Dell SupportAssist Pre-boot System Performance Check diagnostics is embedded with the BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of options for particular devices or device groups allowing you to: ●...
  • Page 177 3~5 seconds. Non-RPMC Flash on Boot Guard fused system Reserved Reserved CPU failure ● Run the Dell Support Assist/Dell Diagnostics tool. ● If the problem persists, replace the system board. System board failure (included ●...
  • Page 178 (AC, battery, coin cell) and drain flea power by pressing and holding down the power button 3~5 seconds to ensure all power are drained. ● Run "BIOS recovery from USB," and the instructions are in the website Dell support. Troubleshooting...

  • Page 179: Recovering The Operating System

    It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its factory state. You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures.

  • Page 180: Backup Media And Recovery Options

    Backup media and recovery options It is recommended to create a recovery drive to troubleshoot and fix problems that may occur with Windows. Dell proposes multiple options for recovering Windows operating system on your Dell PC. For more information. see...

  • Page 181: Chapter 11: Getting Help And Contacting Dell

    Getting help and contacting Dell Self-help resources You can get information and help on Dell products and services using these self-help resources: Table 55. Self-help resources  Self-help resources Resource location Information about Dell products and services www.dell.com My Dell app Figure 122.

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