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Dell Pro Micro Plus Owner's Manual

Dell Pro Micro Plus Owner's Manual

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Dell Pro Micro Plus
QBM1250
Owner's Manual
Regulatory Model: D19U
Regulatory Type: D19U001
March 2025
Rev. A00

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Summary of Contents for Dell Pro Micro Plus

  • Page 1 Dell Pro Micro Plus QBM1250 Owner's Manual Regulatory Model: D19U Regulatory Type: D19U001 March 2025 Rev. A00...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2025 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 Dell Pro Micro Plus QBM1250................. 7 Front....................................... 7 Back......................................8 Top......................................10 Chapter 2: Set up your computer....................11 Chapter 3: Specifications of Dell Pro Micro Plus QBM1250............16 Dimensions and weight..............................16 Processor..................................... 16 Chipset....................................18 Operating system................................18 Memory....................................18...
  • Page 4 Chapter 5: Removing and installing side cover................34 Removing the side cover..............................34 Installing the side cover..............................35 Chapter 6: Removing and installing coin-cell battery..............37 Removing the coin-cell battery............................37 Installing the coin-cell battery............................38 Chapter 7: Removing and installing Customer Replaceable Units (CRUs)........40 Speaker....................................
  • Page 5 Deleting or changing an existing system password or setup password............132 Clearing CMOS settings..............................133 Clearing system and setup passwords........................133 Chapter 11: Troubleshooting.......................134 Dell SupportAssist Pre-boot System Performance Check diagnostics.............. 134 Running the SupportAssist Pre-Boot System Performance Check.............. 134 Contents...
  • Page 6 Power-Supply Unit Built-in Self-Test ........................134 System-diagnostic lights..............................134 Recovering the operating system..........................135 Real-Time Clock—RTC reset............................136 Backup media and recovery options........................... 136 Network power cycle..............................136 Chapter 12: Getting help and contacting Dell................137 Contents...

  • Page 7: Chapter 1: Views Of Dell Pro Micro Plus Qbm1250

    Views of Dell Pro Micro Plus QBM1250 Front Figure 1. Front view 1. Power button Press to turn on the computer if it is turned off, in sleep state, or in hibernate state. When the computer is turned on, press the power button to put the computer into a sleep state; press and hold the power button for 10 seconds to force shut-down the computer.

  • Page 8: Back

    ● Thunderbolt 4 port with DisplayPort Alt Mode and USB 3.2 Gen-2 Type-C port ● DisplayPort 2.1 (UHBR20) port ● HDMI 2.1 FRL port ● VGA port ● USB Type-C with DisplayPort Alt Mode port ● Two USB-A 3.2 Gen 2 port ports ● PS2 port Views of Dell Pro Micro Plus QBM1250...
  • Page 9 5. Service Tag label The Service Tag is a unique alphanumeric identifier that enables Dell service technicians to identify the hardware components in your computer and access warranty information. 6. Power-adapter port Connect a power adapter to provide power to your computer.

  • Page 10: Top

    Figure 3. Top view of Dell Pro Micro Plus QBM1250 1. MyDell QR code MyDell is your hub for content personalized to your Dell Pro Micro Plus QBM1250, including videos, articles, manuals, and easy access to support. Views of Dell Pro Micro Plus QBM1250...

  • Page 11: Chapter 2: Set Up Your Computer

    Set up your computer Steps 1. Connect the keyboard and mouse. Figure 4. Connect the keyboard and mouse to your Dell Pro Micro Plus QBM1250 2. Connect to your network using a cable. Set up your computer...
  • Page 12 Figure 5. Connect to your network using a cable NOTE: Alternatively, you can connect to a wireless network. 3. Connect the display. Figure 6. Connect the display 4. Connect the power cable. Set up your computer...
  • Page 13 Figure 7. Connect the power cable. 5. Press the power button. Set up your computer...
  • Page 14 Dell Support Site. 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 15 Table 1. Locate Dell apps  Resources Description Dell Optimizer is an application is designed to enhance computer performance and productivity by optimizing settings for power, battery, display, collaboration touchpad, and presence detection. It also provides access to applications purchased with your new computer.

  • Page 16: Chapter 3: Specifications Of Dell Pro Micro Plus Qbm1250

    The weight of your computer depends on the ● Minimum - 1.22 kg (2.71 lbs) configuration ordered and manufacturing variability. Processor The following table lists the details of the processors that are supported by your Dell Pro Micro Plus QBM1250. Specifications of Dell Pro Micro Plus QBM1250...
  • Page 17 Up to 13 Up to 13 Up to 13 Up to 13 Up to 13 Up to 13 Up to 13 Processing TOPS TOPS TOPS TOPS TOPS TOPS TOPS TOPS Unit (NPU) performanc Specifications of Dell Pro Micro Plus QBM1250...

  • Page 18: Chipset

    Tera Operations Per Second (TOPS) is an AI performance metric that measures how many trillions of operations per second an AI processor can perform. Chipset The following table lists the details of the chipset supported by your Dell Pro Micro Plus QBM1250. Table 4. Chipset  Description...

  • Page 19: Memory Matrix

    32 GB 64 GB DDR5 32 GB 32 GB External ports and slots The following table lists the external ports and slots of your Dell Pro Micro Plus QBM1250. Table 7. External ports and slots  Description Values Network port One RJ45 ethernet port (1 Gbps) USB ports ●...

  • Page 20: Internal Slots

    ○ One RJ45 ethernet port (5 Gbps) Internal slots The following table lists the internal slots of your Dell Pro Micro Plus QBM1250. Table 8. Internal slots  Description Values ● One M.2 2230 slot for Wi-Fi and Bluetooth combo card ●...

  • Page 21: Ethernet

    Ethernet The following table lists the wired Ethernet Local Area Network (LAN) specifications of your Dell Pro Micro Plus QBM1250. Table 9. Ethernet specifications  Description Values Model Intel WGI219LM Transfer rate 10/100/1000 Mbps Wireless module The following table lists the Wireless Local Area Network (WLAN) module specifications of your Dell Pro Micro Plus QBM1250.

  • Page 22: Storage

    To upgrade from a single SSD configuration to a dual configuration by adding an SSD, users must install SSD heatsinks on both SSDs to ensure optimal performance. These heatsinks must be purchased separately. Storage matrix The following table lists the storage configurations supported on your Dell Pro Micro Plus QBM1250. Table 13. Storage matrix  Storage Slot M.2 PCIe SSD-0 (Primary M.2 PCIe for...

  • Page 23: Gpu-Integrated

    Operating and storage temperature ranges may differ among components, so operating or storing the device outside these ranges may impact the performance of specific components. GPU—Integrated The following table lists the specifications of the integrated Graphics Processing Unit (GPU) supported by your Dell Pro Micro Plus QBM1250. Table 15. GPU—Integrated ...

  • Page 24: External Display Support (Gpu-Integrated)

    ● With MST- 4 ● Without MST- 4 NOTE: MST (Multi-Stream Transport)/daisy-chaining supports four displays. Hardware security The following table lists the hardware security of your Dell Pro Micro Plus QBM1250. Table 18. Hardware security   Hardware security Kensington security-cable slot Padlock ring...

  • Page 25: Regulatory Compliance

    Dell Regulatory Compliance Home Page Responsible Business Alliance policy Operating and storage environment This table lists the operating and storage specifications of your Dell Pro Micro Plus QBM1250. Airborne contaminant level: G1 as defined by ISA-S71.04-1985 Table 21. Computer environment ...

  • Page 26: Chapter 4: Working Inside Your Computer

    You should only perform troubleshooting and repairs as authorized or directed by the Dell technical support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the safety instructions that are shipped with the product or at Dell Regulatory Compliance Home Page.

  • Page 27: Safety Precautions

    Standby power Dell products with standby power must be unplugged before you open the back cover. Systems that are equipped with standby power are powered while turned off. The internal power enables the computer to be remotely turned on (Wake-on-LAN) and suspended into a sleep mode and has other advanced power management features.

  • Page 28: Esd Field Service Kit

    NOTE: It is recommended to always use the traditional wired ESD grounding wrist strap and protective anti-static mat when servicing Dell products. In addition, it is critical to keep sensitive parts separate from all insulator parts while servicing the computer.

  • Page 29: 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. Lifting equipment Adhere to the following guidelines when lifting heavy equipment: CAUTION: Do not lift greater than 50 pounds.

  • Page 30: Screw List

    Screw list NOTE: When removing screws from a component, it is recommended to note the screw type and the quantity of screws, and then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type is restored when the component is replaced.

  • Page 31: Major Components Of Dell Pro Micro Plus Qbm1250

    Heat sink Captive Internal antenna module M3x3 Captive Speaker holder M3x5 System board M3x5 Standoff nut Major components of Dell Pro Micro Plus QBM1250 The following image shows the major components of Dell Pro Micro Plus QBM1250. Working inside your computer...
  • Page 32 Figure 9. Major components of Dell Pro Micro Plus QBM1250 1. Side cover 2. Internal antenna module (black cable) 3. Speaker 4. Speaker holder 5. Heat sink 6. Processor 7. Memory Working inside your computer...
  • Page 33 NOTE: Dell Technologies 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. Working inside your computer...

  • Page 34: Chapter 5: Removing And Installing Side Cover

    Removing and installing side cover Removing the side cover Prerequisites 1. Follow the procedure in Before working inside your computer. About this task The following images indicate the location of the side cover and provide a visual representation of the removal procedure. Figure 10.

  • Page 35: Installing The Side Cover

    Steps 1. Place your computer on its side with the side cover facing up. 2. Loosen the thumbscrew (6x32) that secures the side cover to the chassis. 3. Slide and lift the side cover off the chassis. Installing the side cover Prerequisites If you are replacing a component, remove the existing component before performing the installation process.
  • Page 36 Steps 1. Place the side cover on the chassis by aligning the tabs on the side cover with the slots on the chassis. 2. Slide the side cover towards the rear of the computer. 3. Tighten the thumbscrew (6x32) that secures the side cover to the chassis. Next steps 1.

  • Page 37: Chapter 6: Removing And Installing Coin-Cell Battery

    Removing and installing coin-cell battery Removing the coin-cell battery CAUTION: Removing the coin-cell battery clears the CMOS and resets BIOS settings. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the speaker. About this task The following images indicate the location of the coin-cell battery and provide a visual representation of the removal procedure.

  • Page 38: Installing The Coin-Cell Battery

    Steps 1. Pull the coin-cell battery-cover tab and rotate the coin-cell battery cover to access the coin-cell battery. 2. Press the coin-cell battery-release lever on the coin-cell battery socket and pull the coin-cell battery slightly upwards. 3. Lift and remove the coin-cell battery from the coin-cell battery socket. Installing the coin-cell battery Prerequisites If you are replacing a component, remove the existing component before performing the installation process.
  • Page 39 Next steps 1. Install the speaker. 2. Install the side cover. 3. Follow the procedure in After working inside your computer. Removing and installing coin-cell battery...

  • Page 40: Chapter 7: 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. Speaker Removing the speaker Prerequisites...

  • Page 41: Installing The Speaker

    Steps 1. Disconnect the speaker cable from its connector (INT SPKR) on the system board. 2. Press the tab that secures the speaker to the speaker-support bracket. 3. Lift the speaker off the bracket. Installing the speaker Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following images indicate the location of the speaker and provide a visual representation of the installation procedure.

  • Page 42: Solid State Drive

    Solid state drive NOTE: You computer supports two SSD configurations. ● Single SSD configuration: One SSD is installed in either of the two slots. ● Dual SSD configuration: SSDs are installed in both slots. To upgrade from a single SSD configuration to a dual configuration by adding an SSD, users must install SSD heatsinks on both SSDs to ensure optimal performance.

  • Page 43: Installing The M.2 2230 Solid-State Drive In A Single Ssd Configuration

    Steps 1. Remove the screw (M2x3.5) that secures the M.2 2230 solid-state drive assembly to the system board. 2. Slide and lift the M.2 2230 solid-state drive assembly off the solid-state drive slot (M.2 PCIe SSD-0) on the system board. 3.
  • Page 44 Figure 18. Installing the 2230 solid-state drive Steps NOTE: Steps 1 to Step 5 are applicable to the installation of the SSD thermal pad on the system board. 1. Remove the plastic liner covering the solid-state drive thermal pad, exposing the adhesive surface halfway. 2.

  • Page 45: Removing The M.2 2280 Solid-State Drive In A Single Ssd Configuration

    Removing the M.2 2280 solid-state drive in a single SSD configuration 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 M.2 2280 solid-state drive and provide a visual representation of the removal procedure.
  • Page 46 Figure 20. Installing the M.2 2280 solid-state drive Figure 21. Installing the M.2 2280 solid-state drive Steps NOTE: Steps 1 to Step 5 are applicable to the installation of the SSD thermal pad on the system board. 1. Remove the plastic liner covering the solid-state drive thermal pad, exposing the adhesive surface halfway. 2.

  • Page 47: Removing The M.2 2230 Solid-State Drive In A Dual Ssd Configuration

    3. Remove the remaining plastic liner from the solid-state drive thermal pad, and carefully apply the pad to the M.2 solid-state drive thermal pad area, ensuring a secure and even bond. 4. Use a plastic scraper to gently press and flatten the solid-state drive thermal pad onto the M.2 solid-state drive thermal pad area, ensuring a smooth and even surface for optimal adhesion.
  • Page 48 Figure 22. Removing the M.2 2230 PCIe solid state drive Steps 1. Loosen the screw (M2x8.5) that secures the SSD-extender bracket to the system board. 2. Slide and lift the SSD-extender bracket from the system board. 3. Flip over the extender bracket. 4.

  • Page 49: Installing The M.2 2230 Solid-State Drive In A Dual Ssd Configuration

    Installing the M.2 2230 solid-state drive in a dual SSD configuration Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the SSD and provides a visual representation of the installation procedure. Figure 23.

  • Page 50: Removing The M.2 2280 Solid-State Drive In A Dual Ssd Configuration

    5. Insert the SSD-extender bracket at a 45-degree angle into the M.2 connector on the system board. 6. Replace the screw (M2x8.5) that secures the M.2 2230 SSD-extender bracket to the system board. NOTE: Repeat steps 1 to 6 for installing the M.2 2230 SSD in slot-two (if applicable). Next steps 1.

  • Page 51: Installing The M.2 2280 Solid-State Drive In A Dual Ssd Configuration

    Figure 24. Removing the M.2 2280 PCIe solid state drive Steps 1. Loosen the screw (M2x8.5) that secures the SSD-extender bracket to the system board. 2. Slide and lift the SSD-extender bracket from the system board. 3. Flip over the bracket and remove the M.2 2280 SSD from the extender bracket. Installing the M.2 2280 solid-state drive in a dual SSD configuration Prerequisites...
  • Page 52 Figure 25. Installing the M.2 2280 PCIe solid state drive Steps 1. Place the M.2 2280 SSD on the SSD-extender bracket. 2. Flip over the bracket and align the notch with the tab on the SSD connector on the system board. 3.

  • Page 53: Wireless Card

    Wireless card Removing the wireless card 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 wireless card and provide a visual representation of the removal procedure. Figure 26.

  • Page 54: Installing The Wireless Card

    Installing the wireless card Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following images indicate the location of the wireless card and provide a visual representation of the installation procedure. Figure 27.

  • Page 55: Fan

    5. Replace the screw (M2x3.5) that secures the wireless-card bracket to the wireless card. Next steps 1. Install the side cover. 2. Follow the procedure in After working inside your computer. Removing the fan Prerequisites 1. Follow the procedure in Before working inside your computer.

  • Page 56: Installing The Fan

    Figure 29. Removing the fan Steps 1. Disconnect the fan cable from its connector (FAN CPU) on the system board. 2. Grip the tabs on the fan and lift it upward, holding it at the desired angle. 3. Slide the fan outwards and remove the fan away from the chassis. Installing the fan Prerequisites If you are replacing a component, remove the existing component before performing the installation process.
  • Page 57 Figure 30. Installing the fan Figure 31. Installing the fan Removing and installing Customer Replaceable Units (CRUs)

  • Page 58: Memory

    Steps 1. Slide the fan at a certain angle into its slot on the chassis. 2. Press the fan downwards until it snaps into place. NOTE: Ensure that the tabs are snapped into position on the heat sink. 3. Connect the fan cable to its connector (FAN CPU) on the system board. Next steps 1.

  • Page 59: Installing The Memory Module

    NOTE: Repeat Step 1 and Step 2 to remove any other memory modules installed in your computer. NOTE: Note the slot and the orientation of the memory module in order to replace it in the correct slot. Installing the memory module Prerequisites If you are replacing a component, remove the existing component before performing the installation process.

  • Page 60: External Puck Antenna

    NOTE: Step 1 to Step 6 are applicable when installing the DDR5 thermal pad. 1. Peel back the backing of the DDR5 thermal pad halfway. 2. Align the DDR5 thermal pad over the DDR5 thermal pad area. NOTE: Ensure the corners of the DDR5 thermal pad are aligned to the corners of the DDR5 thermal pad area. 3.

  • Page 61: Installing External Puck Antenna Module

    Figure 34. Removing external puck antenna Steps 1. Loosen the captive screw that secures the puck antenna cover to the chassis. 2. Remove the puck antenna cover to access the bolts on the puck antenna cable. 3. Loosen the bolts on the puck antenna cable. 4.

  • Page 62: Sma Antenna Module

    Figure 35. Installing external puck antenna Steps 1. Align and connect the puck antenna cables to the SMA antenna connectors on the chassis. 2. Tighten the bolts on the puck antenna cable to secure the external puck antenna to the chassis. 3.
  • Page 63 2. Remove the external puck antenna, if applicable. 3. Remove the side cover. 4. Remove the wireless card. About this task The following images indicate the location of SMA antenna module and provide a visual representation of the removal procedure. NOTE: To upgrade to an SMA antenna, the internal antenna (white cable) must be removed.

  • Page 64: Installing Sma Antenna Module

    Installing SMA antenna module 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 SMA antenna module and provide a visual representation of the removal procedure. NOTE: To upgrade to an SMA antenna, the internal antenna (white cable) must be removed.

  • Page 65: Optional Input/Output Modules

    Next steps 1. Install the wireless card. 2. Install the side cover. 3. Install the external puck antenna, if applicable. 4. Follow the procedure in after working inside your computer. Optional Input/Output modules Dual USB 3.2 Gen 2 ports module Removing the dual USB 3.2 Gen 2 ports module Prerequisites 1.
  • Page 66 Figure 38. Removing the dual USB 3.2 Gen 2 ports module Steps 1. Loosen the two captive screws that secure the dual USB 3.2 Gen 2 ports module to the chassis. 2. Disconnect the dual USB 3.2 Gen 2 ports module from the connector (OPTION) on the system board. 3.
  • Page 67 Figure 39. Installing dual USB 3.2 Gen 2 ports module Removing and installing Customer Replaceable Units (CRUs)

  • Page 68: Usb Type-C Port Module

    Figure 40. Installing the dual USB 3.2 Gen 2 ports module Steps NOTE: This step applies if you are upgrading a computer with no existing I/O module. To remove the knock-out port cover, insert a flat-head screwdriver in the hole of the port cover from the outside of the computer.
  • Page 69 About this task The following images indicate the location of the USB Type-C port module and provide a visual representation of the removal procedure. Figure 41. Installing the USB Type-C port module Steps 1. Loosen the two captive screws that secure the USB Type-C port module to the chassis. 2.
  • Page 70 About this task The following images indicate the location of the USB Type-C port module and provide a visual representation of the installation procedure. Figure 42. Installing the USB Type-C port module Removing and installing Customer Replaceable Units (CRUs)

  • Page 71: Thunderbolt Port And Usb Type-C Port Module

    Figure 43. Installing the USB Type-C port module Steps NOTE: This step applies if you are upgrading a computer with no existing I/O module. To remove the knock-out port cover, insert a flat-head screwdriver in the hole of the port cover from the outside of the computer.
  • Page 72 About this task The following images indicate the location of the Thunderbolt port and USB Type-C port module and provide a visual representation of the removal procedure. Figure 44. Removing the Thunderbolt port and USB Type-C port module Steps 1. Loosen the two captive screws that secure the Thunderbolt port and USB Type-C port module to the chassis. 2.
  • Page 73 About this task The following images indicate the location of the Thunderbolt port and USB Type-C port module and provide a visual representation of the installation procedure. Figure 45. Installing the Thunderbolt port and USB Type-C port module Removing and installing Customer Replaceable Units (CRUs)

  • Page 74: Displayport Module

    Figure 46. Installing the Thunderbolt port and USB Type-C port module Steps NOTE: This step applies if you are upgrading a computer with no existing I/O module. To remove the knock-out port cover, insert a flat-head screwdriver in the hole of the port cover from the outside of the computer.
  • Page 75 About this task The following images indicate the location of the DisplayPort module and provide a visual representation of the removal procedure. Figure 47. Removing the DisplayPort module Steps 1. Loosen the two captive screws that secure the DisplayPort module to the chassis. 2.
  • Page 76 About this task The following images indicate the location of the DisplayPort module and provide a visual representation of the installation procedure. Figure 48. Installing DisplayPort module Removing and installing Customer Replaceable Units (CRUs)

  • Page 77: Hdmi Port Module

    Figure 49. Installing DisplayPort module Steps NOTE: This step applies if you are upgrading a computer with no existing I/O module. To remove the knock-out port cover, insert a flat-head screwdriver in the hole of the port cover from the outside of the computer.
  • Page 78 About this task The following images indicate the location of the HDMI port module and provide a visual representation of the removal procedure. Figure 50. Removing the HDMI port module Steps NOTE: This step applies if you are upgrading a computer with no existing I/O module. To remove the knock-out port cover, insert a flat-head screwdriver in the hole of the port cover from the outside of the computer.
  • Page 79 Installing the HDMI port module 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 HDMI port module and provide a visual representation of the installation procedure.

  • Page 80: Vga Port Module

    Figure 52. Installing HDMI port module Steps NOTE: This step applies if you are upgrading a computer with no existing I/O module. To remove the knock-out port cover, insert a flat-head screwdriver in the hole of the port cover from the outside of the computer.
  • Page 81 About this task The following images indicate the location of the VGA port module and provide a visual representation of the removal procedure. Figure 53. Removing the VGA port module Steps 1. Loosen the two captive screws that secure the VGA port module to the chassis. 2.
  • Page 82 About this task The following images indicate the location of the optional I/O module and provide a visual representation of the installation procedure. Figure 54. Installing VGA port module Removing and installing Customer Replaceable Units (CRUs)

  • Page 83: Ps2 Port Module

    Figure 55. Installing VGA port module Steps NOTE: This step applies if you are upgrading a computer with no existing I/O module. To remove the knock-out port cover, insert a flat-head screwdriver in the hole of the port cover from the outside of the computer.
  • Page 84 About this task The following images indicate the location of the PS2 port module and provide a visual representation of the removal procedure. Figure 56. Removing the PS2 port module Steps 1. Loosen the two captive screws that secure the PS2 port module to the chassis. 2.
  • Page 85 About this task The following images indicate the location of the PS2 port module and provide a visual representation of the installation procedure. Figure 57. Installing the PS2 port module Removing and installing Customer Replaceable Units (CRUs)

  • Page 86: Serial Port Module

    Figure 58. Installing the PS2 port module Steps NOTE: This step applies if you are upgrading a computer with no existing I/O module. To remove the knock-out port cover, insert a flat-head screwdriver in the hole of the port cover from the outside of the computer.
  • Page 87 About this task The following images indicate the location of the serial port module and provide a visual representation of the removal procedure. Figure 59. Removing the serial port module Steps 1. Loosen the two captive screws that secure the serial port module to the chassis. 2.
  • Page 88 About this task The following images indicate the location of the serial port module and provide a visual representation of the installation procedure. Figure 60. Installing serial port module Removing and installing Customer Replaceable Units (CRUs)

  • Page 89: Fiber Optic Port Module

    Figure 61. Installing serial port module Steps NOTE: This step applies if you are upgrading a computer with no existing I/O module. To remove the knock-out port cover, insert a flat-head screwdriver in the hole of the port cover from the outside of the computer.
  • Page 90 About this task The following images indicate the location of the fiber optic port module and provide a visual representation of the removal procedure. Figure 62. Removing the fiber optic port module Steps 1. Loosen the three captive screws that secure the fiber optic port module to the chassis. 2.
  • Page 91 About this task The following images indicate the location of the fiber optic port module and provide a visual representation of the installation procedure. Figure 63. Installing fiber optic port module Removing and installing Customer Replaceable Units (CRUs)

  • Page 92: Rj45 Ethernet Port Module

    Figure 64. Installing fiber optic port module Steps NOTE: This step applies if you are upgrading a computer with no existing I/O module. To remove the knock-out port cover, insert a flat-head screwdriver in the hole of the port cover from the outside of the computer.
  • Page 93 About this task The following images indicate the location of the RJ45 ethernet port module and provide a visual representation of the removal procedure. Figure 65. Removing the RJ45 ethernet port module Steps 1. Loosen the two captive screws that secure the RJ45 ethernet port module to the chassis. 2.
  • Page 94 About this task The following images indicate the location of the RJ45 Ethernet port module and provide a visual representation of the installation procedure. Figure 66. Installing RJ45 Ethernet port module Removing and installing Customer Replaceable Units (CRUs)
  • Page 95 Figure 67. Installing RJ45 Ethernet port module Steps NOTE: This step applies if you are upgrading a computer with no existing I/O module. To remove the knock-out port cover, insert a flat-head screwdriver in the hole of the port cover from the outside of the computer.

  • Page 96: Chapter 8: Removing And Installing Field Replaceable Units (Frus)

    The information in this removing and installing FRUs section is intended for authorized service technicians only. CAUTION: To avoid any potential damage to the component or loss of data, Dell Technologies recommends that an authorized service technician replaces the Field Replaceable Units (FRUs). CAUTION: Your warranty does not cover damages that may occur during FRU repairs that are not authorized by Dell Technologies.

  • Page 97: Installing The Heat Sink

    Figure 68. Removing the heat sink Steps 1. In reverse sequential order (3->2->1), loosen the three captive screws that secure the heat sink to the system board. 2. Lift the heat sink off the system board. Installing the heat sink CAUTION: The information in this section is intended for authorized service technicians only.

  • Page 98: Internal Antenna Module

    Figure 69. Installing the heat sink Steps 1. Place the heat sink on the system board. 2. Align the screw holes on the heat sink with the screw holes on the system board. 3. In sequential order (1->2->3), tighten the three captive screws that secure the heat sink to the system board. Next steps 1.

  • Page 99: Installing The Antenna Module (Black Cable)

    Figure 70. Removing the antenna module (black cable) Steps 1. Remove the antenna cable from the routing guides on the chassis. 2. Remove the screw (M3x3) that secures the antenna module to the chassis. 3. Lift the antenna module away from the chassis. Installing the antenna module (black cable) CAUTION: The information in this section is intended for authorized service technicians only.

  • Page 100: Removing The Antenna Module (White Cable)

    Figure 71. Installing the antenna module (black cable) Steps 1. Align the tabs on the antenna module with the holes on the chassis and place it on the chassis. 2. Replace the screw (M3x3) that secures the antenna module to the chassis. 3.
  • Page 101 Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the wireless card. About this task The following images indicate the location of the antenna module (white cable) and provide a visual representation of the removal procedure.

  • Page 102: Installing The Antenna Module (White Cable)

    Figure 73. Removing the antenna module (white cable) Steps 1. Remove the white antenna cable from the routing guides on the chassis and system board. 2. Loosen the captive screw that secures the antenna module cover to the antenna module (white cable). 3.
  • Page 103 Figure 74. Installing the antenna module (white cable) Figure 75. Installing the antenna module (white cable) Removing and installing Field Replaceable Units (FRUs)

  • Page 104: Processor

    Steps 1. Place the antenna module at a certain angle and push it into the slot on the chassis. 2. Align the screw hole and captive screw on the antenna module to the screw holes on the chassis. 3. Replace the screw (M3x3) to secure the antenna module to the chassis. 4.

  • Page 105: Installing The Processor

    Figure 76. Removing the processor Steps 1. Press the release lever down and then push it away from the processor to release it from the securing tab. 2. Extend the release lever all the way to ensure that the processor cover is open completely. CAUTION: When removing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket.

  • Page 106: Speaker Holder

    Figure 77. Installing the processor Steps 1. Align the notches on the processor with the tabs on the processor socket and place the processor in the processor socket. CAUTION: Ensure that the processor-cover notch is positioned underneath the alignment post. NOTE: The pin-1 corner of the processor has a triangle that aligns with the triangle on the pin-1 corner on the processor socket.

  • Page 107: Installing The Speaker Holder

    Figure 78. Removing the speaker holder Steps 1. Remove the screw (M3x5) that secures the speaker holder to the system board. 2. Lift the speaker holder away from the system board. Installing the speaker holder Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the speaker holder and provides a visual representation of the installation procedure.

  • Page 108: System Board

    Figure 79. Installing the speaker holder Steps 1. Align and insert the speaker holder into the slots on the system board and press it until the release tab clicks. 2. Replace the screw (M3x5) to secure the speaker holder to the system board. Next steps 1.
  • Page 109 12. Remove the processor. 13. Remove the optional input/output module, whichever is applicable. ● Dual USB 3.2 Gen 2 ports module ● USB Type-C port module ● Thunderbolt port and USB Type-C port module ● DisplayPort module ● HDMI port module ●...
  • Page 110 7. Fan connector (FAN CPU) 8. Memory-module slots (DIMM1 and DIMM2) 9. Coin-cell battery The following images indicate the location of the system board and provide a visual representation of the removal procedure. Figure 81. Removing the system board Removing and installing Field Replaceable Units (FRUs)

  • Page 111: Installing The System Board

    Figure 82. Removing the system board Steps 1. Remove the wireless-card cables from their routing guides on the system board. 2. Remove the three screws (M3x5) that secure the system board to the chassis. 3. Remove the screw mount (M3x4) that secure the system board to the chassis. 4.
  • Page 112 Figure 83. System board connectors 1. Speaker connector (INT SPK) 2. Wireless card slot (M.2 WLAN) 3. M.2 Solid-state drive slots (M.2 PCIe SSD-0 and M.2 PCIe SSD-1) 4. Optional PS/2, serial port connector (KB MS SERIAL) 5. Optional port connector (OPTION) 6.
  • Page 113 Figure 84. Installing the system board Removing and installing Field Replaceable Units (FRUs)
  • Page 114 Figure 85. Installing the system board Steps 1. Align and lower the system board into the chassis until the standoff points at the back of the system board align with those on the chassis. 2. Replace the screw mount (M3x4) that secure the system board to the chassis. 3.
  • Page 115 3. Install the processor. 4. Install the heat sink. 5. Install the memory. 6. Install the fan. 7. Install the wireless card. 8. Install the solid-state drive. 9. Install the M.2 2230 solid-state drive M.2 2280 solid-state drive in single SSD configuration, if applicable. 10.

  • Page 116: Chapter 9: Software

    ● Windows 11 Enterprise ● Windows 11 Pro National Education ● Ubuntu Linux 24.04 LTS, 64-bit 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 117: Chapter 10: Bios Setup

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

  • Page 118: F12 One Time Boot Menu

    Depending on your computer and its installed devices, the items that are listed in this section may or may not be displayed. Table 25. System setup options—System information menu  Overview Dell Pro Micro Plus QBM1250 BIOS Version Displays the BIOS version number. Service Tag Displays the Service Tag of the computer.
  • Page 119 Table 25. System setup options—System information menu (continued) Overview Processor L2 Cache Displays the processor L2 Cache size. Processor L3 Cache Displays the processor L3 Cache size. Microcode Version Displays the microcode version. Intel Hyper-Threading Capable Displays whether the processor is Hyper-Threading (HT) capable. Intel vPro Technology Displays the status of Intel vPro technology in your computer.
  • Page 120 Table 26. System setup options—Boot Configuration menu (continued) Boot Configuration By default, the Deployed Mode option is enabled. Expert Key Management Enable Custom Mode Enable or disable custom mode. By default, the OFF option is disabled. Custom Mode Key Management Select the custom values for expert key management. Table 27.
  • Page 121 Table 28. System setup options—Storage menu (continued) Storage Type Displays the M.2 PCIe SSD-0 type information of the computer. Device Displays the M.2 PCIe SSD-0 device information of the computer. Drive Information M.2 PCIe SSD-1 Type Displays the M.2 PCIe SSD-1 type information of the computer. Device Displays the M.2 PCIe SSD-1 device information of the computer.
  • Page 122 Table 31. System setup options—Power menu (continued) Power By default, the OFF option is disabled. Thermal Management Select the heat management settings for the cooling fan and the processor, with respect to system performance, noise, and temperature. By default, the Optimized option is selected. USB Wake Support Enable USB Wake Support When enabled, you can use the USB devices like a mouse or keyboard to wake...
  • Page 123 Absolute® Absolute® Absolute Software provides various cyber security solutions, some requiring software preloaded on Dell computers and integrated into the BIOS. To use these features, you must enable the Absolute BIOS setting and contact Absolute for configuration and activation. By default, the Enable Absolute option is enabled.
  • Page 124 BIOS passwords. You can modify the minimum and maximum length of the passwords and require passwords to contain certain character classes (upper case, lower case, digit, special character). Dell Technologies recommends setting the minimum password length to at least eight characters. Upper Case Letter Reinforces password must have at least one upper case letter.
  • Page 125 Table 33. System setup options—Passwords menu (continued) Passwords Dell does not recommend enabling the Master Password Lockout unless you have implemented your own password recovery computer. Allow Non-Admin PSID Revert Enable Allow Non-Admin PSID Revert Controls access to the Physical Security ID (PSID) revert of NVMe hard-drives from the Dell Security Manager prompt.
  • Page 126 Table 35. System setup options—System Management menu (continued) System Management By default, the Disabled option is selected. Intel AMT Capability Enable Intel AMT Capability Enable or disable the Intel AMT capability. By default, the Restrict Preboot Access option is selected. SERR Messages Enable SERR Messages Enable or disable SERR (system error) messages.
  • Page 127 ● Intel Virtualization Technology - Direct Enable Intel Trusted Execution By default, the OFF option is enabled. Technology (TXT) For additional security, Dell Technologies recommends enabling the Intel Trusted Execution Technology (TXT) feature. DMA Protection Enable Pre-Boot DMA support. Allows you to control the Pre-Boot DMA protection for both internal and external ports.

  • Page 128: Updating The Bios

    Failure to provide the recovery key can result in data loss or an operating system reinstall. For more information, see the Knowledge Base Resource updating the BIOS on Dell systems with BitLocker enabled. Steps 1.

  • Page 129: Updating The Bios In Linux And Ubuntu

    Failure to provide the recovery key can result in data loss or an operating system reinstall. For more information, see the Knowledge Base Resource updating the BIOS on Dell systems with BitLocker enabled. Steps 1.

  • Page 130: Updating The Bios

    ● USB drive formatted to the FAT32 file system (the drive does not have to be bootable) ● BIOS executable file that you downloaded from the Dell Support website and copied to the root of the USB drive ● AC power adapter must be connected to the computer ●...

  • Page 131: Updating The Bios In Linux And Ubuntu

    ● USB drive formatted to the FAT32 file system (the drive does not have to be bootable) ● BIOS executable file that you downloaded from the Dell Support website and copied to the root of the USB drive ● AC power adapter must be connected to the computer ●...

  • Page 132: Assigning A System Setup Password

    CAUTION: Ensure that your computer is locked when it is not in use. Anyone can access the data that is stored on your computer, when left unattended. Table 41. System and setup password  Password type Description System password Password that you must enter to boot to your operating system.

  • Page 133: Clearing Cmos Settings

    Clearing system and setup passwords About this task To clear the system or setup passwords, contact Dell technical support as described at Contact Support. NOTE: For information about how to reset Windows or application passwords, see the documentation accompanying Windows or your application.

  • Page 134: Chapter 11: 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 within the BIOS and launched by the BIOS internally. The embedded system diagnostics provides options for particular devices or device groups allowing you to: ●...

  • Page 135: Recovering The Operating System

    It enables you to diagnose hardware issues, repair your computer, back up your files, and 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 the primary operating system due to software or hardware failures.

  • Page 136: Real-Time Clock-Rtc Reset

    Real-Time Clock—RTC reset The Real-Time Clock (RTC) reset function allows you or the service technician to recover the recently launched model Dell Pro and Pro Max computers from No POST/No Boot/No Power situations. You can initiate the RTC reset on the computer from a power-off state only if it is connected to AC power.

  • Page 137: Chapter 12: 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 43. Self-help resources  Self-help resources Resource location Information about Dell products and services Dell Site Tips Contact Support In Windows search, type Contact Support, and press Enter.

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