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Advantech ARK-1251 User Manual
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Advantech ARK-1251 User Manual

Advantech ARK-1251 User Manual

Fanless embedded box pc
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ARK-1251
Fanless Embedded Box PC

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Summary of Contents for Advantech ARK-1251

  • Page 1 User Manual ARK-1251 Fanless Embedded Box PC...
  • Page 2 Veuillez noter que ce paquet contient un manuel d'utilisation papier en chinois à des fins de certification China CCC. Veuillez ne pas tenir compte du manuel d'utilisation chinois sur papier si le produit ne doit pas être vendu et/ou installé en Chine. ARK-1251 User Manual...
  • Page 3 No part of this manual may be reproduced, copied, translated, or transmitted in any form or by any means without the prior written permission of Advantech Co., Ltd. The information provided in this manual is intended to be accurate and reliable.
  • Page 4 Product Warranty (2 Years) Advantech warrants the original purchaser that each of its products will be free from defects in materials and workmanship for two years from the date of purchase. This warranty does not apply to any products that have been repaired or altered by persons other than repair personnel authorized by Advantech, or products that have been subject to misuse, abuse, accident, or improper installation.
  • Page 5 Technical Support and Assistance Visit the Advantech website at http://support.advantech.com where you can find the latest information about the product. Contact your distributor, sales representative, or Advantech's customer service center for technical support if you need additional assistance. Please have the following information ready before you call: –...
  • Page 6 Before setting up the system, check that the items listed below are included and in good condition. If any item does not accord with the table, please contact your dealer immediately. 1 x ARK-1251 Unit  1 x User Manual (Simplified Chinese) ...
  • Page 7 70 dB (A). DISCLAIMER: These instructions are provided according to IEC 704-1 specifi- cations. Advantech disclaims all responsibility for the accuracy of any state- ments con- tained herein. Use a power cord connected to a socket-outlet with a grounded connection.
  • Page 8 Débranchez toujours complètement le cordon d'alimentation de votre châssis lorsque vous utilisez du matériel. Ne faites pas de connexion quand l'appareilest sous tension. Les composants électroniques sensibles peuvent être endom- magés par des surtensions soudaines. ARK-1251 User Manual viii...
  • Page 9 Ce produit est destiné à être alimenté par une alimentation homologuée UL adaptée à une utilisation à une température minimale de Tma de 60°C (140°F) dont la sortie est nominale de 24V, 5A. Veuillez contacter Advantech pour plus d'informations. ZONE D'ACCÈS RESTREINT: L'équipement ne doit être installé que dans une zone d'accès restreint.
  • Page 10 ARK-1251 User Manual...
  • Page 11 Table 2.5: M2_LED_SEL M.2 SSD LED Mode Jumper .... 10 Table 2.6: SW_422_485_1 RS-485/RS-422 Failsafe....10 Table 2.7: SW_422_485_2 RS-485/RS-422 Failsafe....11 System I/O ....................11 Figure 2.2 ARK-1251 Front and Rear I/O Connector Diagram.. 12 External I/O ..................... 12 2.4.1 Power On/Off Button..............12 Figure 2.3 Power On/Off Button ..........
  • Page 12 Introduction ..................... 34 Entering BIOS Setup................34 3.2.1 Main Setup.................. 34 3.2.2 Advanced Setup ................. 35 3.2.3 Chipset Configuration ..............87 3.2.4 Security..................106 3.2.5 Boot ..................109 3.2.6 Save & Exit ................110 3.2.7 MEBx ..................111 ARK-1251 User Manual...
  • Page 13 Chapter General Information This chapter details background information on the ARK-1251 series.
  • Page 14 BSMI, and UKCA. Multiple Display Support In ARK-1251, system offers 1x 8K HDMI displays, which support up to 7680 x 4320 @60Hz, and 1x 8K DP, which support up to 7680 x 4320 @60Hz. The graphic engine is Intel® Graphics.
  • Page 15 1x M.2 2280 B key with nano SIM holder (NVMe, PCIe x2 / SATA) 1.2.9 Other TPM: NPCT764AABYX FW7.2.3.1  Watchdog Timer: 255 levels timer interval, setup by software  1.2.10 Software Support Microsoft Windows: Windows 10 Enterprise, Windows 11 Enterprise  Linux: Ubuntu 24.04  ARK-1251 User Manual...
  • Page 16 5~500 Hz, and 1hr/axis (with Wall Mount) Shock During Operation: With SSD: 30 G, IEC-60068-2-27, half sine, 11 ms  duration (with Wall Mount) EMC: CE/FCC Class B, CCC, UKCA, and BSMI  Safety: UL, CB, CCC, and UKCA  ARK-1251 User Manual...
  • Page 17 Mechanical Diagrams Din Rail: 173 x 60 x 141 mm (6.73 x 2.36 x 5.55 in) (W x H x D) 143.30 Figure 1.1 ARK-1251 Mechanical Dimensions Diagram ARK-1251 User Manual...
  • Page 18 Wall Mount: Figure 1.2 ARK-1251 Mechanical Dimensions Diagram With Wall Mount Optional MOS Modules for iDoor Expansion Table 1.1: Optional MOS Modules for iDoor Expansion Part-Number Description MOS-2120-Z1101E Giga LAN Ethernet module, 1-Ch, PCIe I/F, MOS-1130Y-0202 Isolated CANBus, 2-Ch, DB9, PCIe I/F...
  • Page 19 Chapter Hardware Configuration This chapter details instructions for installing the ARK-1251 series.
  • Page 20 2.2.1 Jumper Description You may configure ARK-1251 to match the needs of your application by setting jump- ers. A jumper is a metal bridge used to close an electric circuit. It consists of two metal pins and a small metal clip (often protected by a plastic cover) that slides over the pins to connect them.
  • Page 21 2.2.3 Jumper Locations Figure 2.1 ARK-1251 Jumper Location 2.2.4 Jumper Settings 2.2.4.1 Clear CMOS (JCMOS1) Table 2.2: JCMOS1 Clear CMOS Setting Function (1-2 Closed) Normal operation (Default) (2-3 Closed) Clear CMOS 2.2.4.2 HW AT/ATX Mode DIP Switch (SW4001) Table 2.3: SW4001 AT/ATX Mode Switch...
  • Page 22 Table 2.6: SW_422_485_1 RS-485/RS-422 Failsafe Setting Function Pin 1/2 represents Off: Disable COM2 failsafe (default), (1-8), (2-7) Pin 7/8 represents On: Enable COM2 failsafe Pin 3/4 represents Off: Disable COM1 failsafe (default), (3-6), (4-5) Pin 5/6 represents On: Enable COM1 failsafe ARK-1251 User Manual...
  • Page 23 Pin 3/4 represents Off: Disable COM3 failsafe (default), (3-6), (4-5) 5/6 represents On: Enable COM3 failsafe System I/O HDMI USB 3.2 LAN1 USB 2.0 LAN2 USB 2.0 LAN3 Line out Mic in PWR Button DC in COM2 COM4 COM1 COM3 Switch ARK-1251 User Manual...
  • Page 24 The power input connector supports 12 ~ 28V. The 3 pins are defined as +, -, and Ground. Figure 2.4 Power Input Connector 2.4.3 M.2 SSD LED Indicator ARK-1251 provides one LED that indicates M.2 M Key or B key by jumper, and com- pact flash disk status. Figure 2.5 SSD LED Indicator ARK-1251 User Manual...
  • Page 25 Figure 2.6 Antenna Hole 2.4.5 Audio Connector ARK-1251 offers stereo audio ports by two phone jack connectors of Line Out and Mic In. The audio chip is controlled by Realtek ALC888S, and it’s compliant with Aza- lea standard. Figure 2.7 Audio Connector 2.4.6...
  • Page 26 2.4.7 COM Connector ARK-1251 provides offer 2 x RS-232/422/485 D-sub 9 serial communication interface ports, and the default setting is RS-232, the mode RS-422/ 485 can be supported via the BIOS settings. Also provide 2 x RS-422/485 D-sub 9 serial communication inter- face ports, and the default setting is RS-485.
  • Page 27 BI_DD-(GHz) 2.4.10 HDMI Connector ARK-1251 is equipped with 1 x 19-pin HDMI Type A interface. The HDMI link sup- ports resolutions up to 7680 x 4320 @ 60 Hz. Figure 2.12 HDMI Receptacle Connector Table 2.12: HDMI Connector Pin Define...
  • Page 28 TMDS clock- Reserved DDC/CEC Ground Hot Plug Detect 2.4.11 ARK-1251 is equipped with 1 x 20-pin DP connector, supports up to 7680 x 4320 @ 60 Hz. Figure 2.13 DP Receptacle Connector Table 2.13: DP Connector Pin Define Signal Name...
  • Page 29 USB Data + 2.4.13.1 Remote Switch Connector ARK-1251 provides the remote switch connector for power on/off. From the left to the right are WDT, Power Switch, GND, and Reset. Figure 2.16 Remote Switch Connector Table 2.16: Remote Connector Pin Define...
  • Page 30 Installation 2.5.1 Memory and CPU Thermal Pad Installation Loosen the 6 screws on the front/sides and remove the bottom cover ARK-1251 User Manual...
  • Page 31 Loosen the 4 spring screws on main board. Loosen the 4 screws on the top cover, and remove the top cover. ARK-1251 User Manual...
  • Page 32 Install CPU thermal pad on top cover 25x20x0.21 Note! The release paper must be removed when installing thermal pad for CPU. Install the memory into the slots. ARK-1251 User Manual...
  • Page 33 Note! There are two thermal pads for second RAM in the accessory box. Please do place the thermal pad for second RAM if needed. Note! The release paper must be removed when installing thermal pad for memory. ARK-1251 User Manual...
  • Page 34 2.5.2 M.2 Module Installation Loosen the 6 screws on the front/sides and remove the bottom cover. ARK-1251 User Manual...
  • Page 35 M key is default for storage, E key is for WiFi module, and B key is for 5G/AI card/ iDoor module. Using 4pcs M3.5 screws in accessory box to install the M.2 SSD thermal kit and thermal pad for M.2 2280 PCIe module. Figure 2.17 M.2 2280 SSD thermal kit ARK-1251 User Manual...
  • Page 36 Note! The release paper must be removed when installing thermal pad for SSD. Figure 2.18 Placing thermal pad along with the mark Figure 2.19 Cover up the kit with M3.5 screws ARK-1251 User Manual...
  • Page 37 AMO I032 + Idoor Installation AMO-I032 is the expansion kit (M.2 B-Key to mPCIe) for installing iDoor modules on ARK-1251. Users need to install AMO-I032 together with the iDoor module. Loosen the 6 screws on the front/sides and remove the bottom cover.
  • Page 38 Install AMO-I032 on B key and screw it with a M3x5L screw. The iDoor module board can then be installed on the AMO-I032. Replace the bottom cover with the 6 screws. ARK-1251 User Manual...
  • Page 39 Using the 4 screws removed in the above step to secure the wall mount brack- ets on both sides of ARK-1251 Dévissez les 4x vis M3x5L ou des deux côtés de l'ARK-1251. Vissez les supports de montage mural des deux côtés de l'ARK-1251 avec les quatre vis à l'arrière. ARK-1251 User Manual...
  • Page 40 2.5.6 Din Rail Installation Unscrew the 3 x M3x5L screws from the back side of ARK-1251. Using 3 screws to secure the DIN-rail bracket on the back. Dévissez les 3 vis M3x5L à l'arrière de l'ARK-1251. Revissez le support du rail DIN avec les trois vis...
  • Page 41 ARK-1251 Using 4 x M4x6L in VESA mount accessory box to install VESA mount on cer- tain object Using 4 x M3x6L in VESA mount accessory box to install ARK-1251 on VESA mount. Note! Wall mount kit AMK-W006 must be used along with VESA mount.
  • Page 42 2.5.8 Optional CAN Bus Installation Loosen the 6 screws on the front/sides and remove the bottom cover. Loosen 2 screws of the DIO cable ARK-1251 User Manual...
  • Page 43 Remove the DIO cable. Install the CAN Bus cable and bottom cover back. (Advantech Part Number 1700030518-01). ARK-1251 User Manual...
  • Page 44 CAN Bus cable pin definitions are shown below. Figure 2.20 CAN Bus Connector Table 2.17: CAN Bus Connector Pin Define Signal Name CAN_L CAN_H ARK-1251 I/O image with optional CAN Bus port. HDMI USB 3.2 LAN1 USB 2.0 LAN2 USB 2.0...
  • Page 45 Chapter BIOS Setting This chapter details instructions for Setting BIOS configuration data.
  • Page 46 All configuration data is stored in battery-backed CMOS to ensure the setup information is retained when the power is turned off. This chapter describes the basic navigation of the ARK-1251 BIOS setup screens.
  • Page 47 The options for any of the Advanced BIOS Setup items can be displayed by highlighting the item using the <Arrow> keys. The Advanced BIOS Setup page is shown below: 3.2.2.1 WWAN Configuration ARK-1251 User Manual...
  • Page 48 WWAN Device  Enable or disable M.2 WWAN Device 3.2.2.2 CPU Configuration ARK-1251 User Manual...
  • Page 49 Active Cores and Active Efficient-cores will be disabled. Active SOC-North Efficient-cores  Number of SOC-North Efficient-cores to enable in SOC North Hyper-Threading  Enable or Disable Hyper-Threading Technology. BIST  Enable/Disable BIST (Built-in Self Test) on reset. ARK-1251 User Manual...
  • Page 50 'Disabled' as well. This option will be grayed out when 'VT-d' option is config- ured as 'Disabled'. Legacy Game Compatibility Mode  When enabled, Pressing the scroll lock key will toggle the Efficient-cores between being parked when Scroll Lock LED is on and un-parked when LED is off. ARK-1251 User Manual...
  • Page 51 Efficient-core Information ARK-1251 User Manual...
  • Page 52 Performance-core ARK-1251 User Manual...
  • Page 53 3.2.2.3 Power & Performance CPU - Power Management Control ARK-1251 User Manual...
  • Page 54 Power Limit 4 Lock. When enabled PL4 configurations are locked during OS. When disabled PL4 configuration can be changed during OS. Power Limit 4 Boots  Configure Power Limit 4 Boost in Watts. The value 0 means disable. C states  Enable/Disable CPU Power Management. ARK-1251 User Manual...
  • Page 55 Thermal Monitor  Enable/Disable Thermal Monitor. Timed MWAIT  Enable/Disable Timed MWAIT Support. View/Configure Turbo Options ARK-1251 User Manual...
  • Page 56 Enable/Disable Energy Efficient P-state feature. Package Power Limit MSR Lock  Enable/Disable locking of Package Power Limit settings. Energy Efficient Turbo  Enable/Disable Energy Efficient Turbo Feature. This feature will opportunisti- cally lower the turbo frequency to increase efficiency. ARK-1251 User Manual...
  • Page 57 ARK-1251 User Manual...
  • Page 58 E-Core Turbo Ratio Limit Ratio  Efficient-core Turbo Ratio Limit Ratio(x) defines the turbo ratio (max is 85 irre- spective of the core extension mode), the core range is defined in E-core Turbo Ratio Limit CoreCount(x). ARK-1251 User Manual...
  • Page 59 Config TDP Configurations ARK-1251 User Manual...
  • Page 60 Power Limit 1 in Milli Watts. Power Limit 2  Power Limit 2 in Milli Watts. Power Limit 1 Time Window  Power Limit 1 Time Window value in seconds. ConfigTDP Turbo Activation Ratio  Custom value for Turbo Activation Ratio. ARK-1251 User Manual...
  • Page 61 125. 0 = AUTO. Uses BIOS VR mailbox command 0x9. PSYS Offset  PSYS Offset defined in 1/1000 increments. Range is 0-63999. For an offset of 25.348, enter 25348. PSYS Uses BIOS VR mailbox command 0x4. PSYS Prefix  ARK-1251 User Manual...
  • Page 62 SVID Stabilization Delay  Configure SVID Stabilization Delay (in us) being used for the FVM feature when it is enabled. Note that this delay applies to all SVID domains equally (no unique values possible for IA/GT/SA). Acoustic Noise Settings ARK-1251 User Manual...
  • Page 63 This option needs to be configured to reduce acoustic noise during deeper C states. False: Don't disable Fast ramp during deeper C states; True: Disable Fast ramp during deeper C state. Slow Slew Rate for GT Domain  ARK-1251 User Manual...
  • Page 64 Disable Fast PKG C State Ramp for SA Domain  This option needs to be configured to reduce acoustic noise during deeper C states. False: Don't disable Fast ramp during deeper C states; True: Disable Fast ramp during deeper C state. Efficiency/Performance VR Settings ARK-1251 User Manual...
  • Page 65 VR Config Enable  VR Config Enable. PS3 Enable  PS3 Enable/Disable. 0 - Disabled, 1 - Enabled. Uses BIOS VR mailbox com- mand 0x3. PS4 Enable  ARK-1251 User Manual...
  • Page 66 PS1 to PS0 Dynamic Cutoff Enable/Disable. PS2 to PS1 Dynamic Cutoff Enable  PS2 to PS1 Dynamic Cutoff Enable/Disable. CEP Enable  Enable/Disable SIRP (SoC Iccmax Reactive Protection) Support. SIRP Enable  Enable/Disable SIRP (SoC Iccmax Reactive Protection) Support GT VR Settings ARK-1251 User Manual...
  • Page 67 VR Config Enable  VR Config Enable. PS3 Enable  PS3 Enable/Disable. 0 - Disabled, 1 - Enabled. Uses BIOS VR mailbox com- mand 0x3. PS4 Enable  ARK-1251 User Manual...
  • Page 68 PS1 to PS0 Dynamic Cutoff Enable  PS1 to PS0 Dynamic Cutoff Enable/Disable. PS2 to PS1 Dynamic Cutoff Enable  PS2 to PS1 Dynamic Cutoff Enable/Disable. CEP Enable  Enable/Disable CEP (Current Excursion Protection) Support. SA VR Settings ARK-1251 User Manual...
  • Page 69 VR Config Enable  VR Config Enable. PS3 Enable  PS3 Enable/Disable. 0 - Disabled, 1 - Enabled. Uses BIOS VR mailbox com- mand 0x3. PS4 Enable  ARK-1251 User Manual...
  • Page 70 PS1 to PS0 Dynamic Cutoff Enable  PS1 to PS0 Dynamic Cutoff Enable/Disable. PS2 to PS1 Dynamic Cutoff Enable  PS2 to PS1 Dynamic Cutoff Enable/Disable. CEP Enable  Enable/Disable CEP (Current Excursion Protection) Support. RFI Settings ARK-1251 User Manual...
  • Page 71 Global DLVR RFI Mitigation Control  Enable/Disable Global DLVR RFI Mitigation Control. DLVR SSC Value  DLVR SSC in percentage with multiple of 0.25%. 0 = 0%, 31 = 7.75%. DLVR RFI Frequency  DLVR RFI Frequency in MHz. ARK-1251 User Manual...
  • Page 72 Power Limit 3 in Milli Watts/Percent. BIOS will round to the nearest 1/8W when programming. For example, if 12.50W, enter 12500, if 12%, enter 12000, if 50%, enter 50000. If the value is 0, BIOS leaves the hardware default value. ARK-1251 User Manual...
  • Page 73 Use Response Mode to adjust Psys_PL3 power reduction behavior. Battery- enabled systems use Gradual Power Reduction. Power Limit 3 Lock  Power Limit 3 Lock. When enabled PL3 configurations are locked during OS. When disabled PL3 configuration can be changed during OS. CPU Lock Configuration ARK-1251 User Manual...
  • Page 74 CFG Lock  Configure MSR 0xE2[15], CFG Lock bit. GT/Media - Power Management Control ARK-1251 User Manual...
  • Page 75 MC6 (Media Standby)  Check to enable Media standby support. Maximum GT frequency  Maximum GT frequency limited by the user. Disable Turbo GT frequency  Enabled: Disables Turbo GT frequency. Disabled: GT frequency is not limited. ARK-1251 User Manual...
  • Page 76 3.2.2.4 PCH-FW Configuration ME State  When Disabled, ME will be put into ME Temporarily Disabled Mode. Manageability Features State  When Disabled, ME will not be unconfigured on RTC Clear. ME Unconfig on RTC Clear  ARK-1251 User Manual...
  • Page 77 Disables PTT in SkuMgr Warning ! PTT/dTPM will be disabled and all data saved on it will be lost. Extend CSME Measurement to TPM-PCR  Enable/Disable Extend CSME Measurement to TPM-PCR[0] and AMT Config to TPM-PCR[1]. Firmware Update Configuration ARK-1251 User Manual...
  • Page 78 ME FW Image Re-Flash  Enable/Disable ME FW Image Re-Flash function. FW Update  Enable/Disable ME FW Update function Anti-Rollback SW Configuration ARK-1251 User Manual...
  • Page 79 SVN will be blocked from execution. Set HW-Enforced Anti-Rollback for Current SVN  Enable hardware-enforced Anti-Rollback mechanism for current ARB-SVN value. FW with lower ARB-SVN will be blocked from execution. The value will be restored to disable after the command is sent. ARK-1251 User Manual...
  • Page 80 OEM Key Revocation Configuration Automatic OEM Key Revocation  When enabled, the BIOS will automatically send HECI command to revoke OEM keys. Invoke OEM Key Revocation  A Heci command will be send to revoke the OEM key. ARK-1251 User Manual...
  • Page 81 3.2.2.5 Trusted Computing Security Device Support  Enable or disable BIOS support for security device. SHA256 PCR Bank  Enable or Disable SHA256 PCR Bank. SHA384 PCR Bank  ARK-1251 User Manual...
  • Page 82  Select to Tell O.S. to support PPI Spec Version 1.2 or 1.3. Device Select  TPM 1.2 will restrict support to TPM 1.2 devices, TPM 2.0 will restrict support to TPM 2.0 devices 3.2.2.6 ACPI Setting ARK-1251 User Manual...
  • Page 83 Enable ACPI Auto Configuration  Enables or Disables BIOS ACPI Auto Configuration. Enable Hibernation  Enables or Disables System’s ability to Hibernate (OS/S4 Sleep State). 3.2.2.7 iManager Configuration ARK-1251 User Manual...
  • Page 84 Power Saving Mode  Enable/Disable power saving mode. Serial Port 1 Configuration ARK-1251 User Manual...
  • Page 85 Serial Port  Enable/Disable serial port. Change Settings  Select optimal settings for Super IO device. COM port mode  COM Port Mode Select ARK-1251 User Manual...
  • Page 86 Serial Port 2 Configuration Serial Port  Enable/Disable serial port. Change Settings  Select optimal settings for Super IO device. COM port mode  ARK-1251 User Manual...
  • Page 87 COM Port Mode Select Serial Port 3 Configuration Serial Port  Enable/Disable serial port. Change Settings  ARK-1251 User Manual...
  • Page 88 Select optimal settings for Super IO device. COM port mode  COM Port Mode Select Serial Port 4 Configuration Serial Port  ARK-1251 User Manual...
  • Page 89 Enable/Disable serial port. Change Settings  Select optimal settings for Super IO device. COM port mode  COM Port Mode Select Hardware Monitor ARK-1251 User Manual...
  • Page 90 Hardware Monitor  Provides hardware monitoring information Watch Dog Timer Configuration Watch Dog Timer Hidden  Enabled or Disabled Watch Dog Timer Hidden. ARK-1251 User Manual...
  • Page 91 Watch Dog Timer  Enable or Disable the Watch Dog Timer function GPIO Configuration GPIO Control Enable  Select to control GPIO by EC or user override during the POST stage. ARK-1251 User Manual...
  • Page 92 EdgeBMC Network Configuration ARK-1251 User Manual...
  • Page 93 3.2.2.8 S5 RTC Wake Settings Wake system from S5  Enable or disable system wake on alarm event. ARK-1251 User Manual...
  • Page 94 3.2.2.9 Serial Port Console Redirection Console Redirection  Console Redirection Enable or Disable. Console Redirection EMS  Console Redirection Enable or Disable. ARK-1251 User Manual...
  • Page 95 3.2.2.10 Intel TXT Information Intel TXT Information  Display Intel TXT information ARK-1251 User Manual...
  • Page 96 3.2.2.11 USB Configuration XHCI Hand-Off  This is a workaround for OS without XHCI hand-off support. USB Mass Storage Driver Support  Enable/Disable USB Mass Storage Driver Support. USB transfer time-out  ARK-1251 User Manual...
  • Page 97 The time-out value for control, bulk, and interrupt transfers. Device reset time-out  USB mass storage device Start Unit command time-out. Device power-up delay  Maximum time the device will take before it properly reports itself to the Host Controller. 3.2.2.12 Network Stack Configuration ARK-1251 User Manual...
  • Page 98 Network Stack  Enable/Disable UEFI Network Stack. 3.2.2.13 NVMe Configuration ARK-1251 User Manual...
  • Page 99 Setup screen. You can display a Chipset BIOS Setup option by highlighting it using the <Arrow> keys. All Plug-and-Play BIOS Setup options are described in this sec- tion. The Plug-and-Play BIOS Setup screen is shown below. 3.2.3.1 System Agent (SA) Configuration ARK-1251 User Manual...
  • Page 100 NPU Device  Enable/Disable NPU (Neural Processing Unit) Device. Memory Configuration Maximum Memory Frequency  Maximum Memory Frequency Selections in Mhz Max TOLUD  Maximum Value of TOLUD. SAGV  System Agent Geysetville. ARK-1251 User Manual...
  • Page 101 Skip Scaning of External Gfx Card  If Enable, it will not scan for External Gfx Card on PCIE Ports. Primary Display  Select from IGFX/PEG/PCI, which graphics device should be Primary Dis- play or select SG for Switchable Gfx. ARK-1251 User Manual...
  • Page 102 Enable/Disable RC1p support. If Media RC1p is enabled, send a RC1p fre- quency request to PMA if other conditions being met. PAVP Enable  Enable/Disable PAVP. V-by-One (iTE6807) Enable  Enable/Disable V-by-One(iTE6807) Bypass VBT Update  Enable/Disable bypass VBT update. IUER Button Enable  Enable/Disable IUER Button Functionality. ARK-1251 User Manual...
  • Page 103 Intel® Ultrabook Event Support IUER Slate Enable  Enable/Disable IUER Slate Functionality. IUER Dock Enable  Enable/Disable IUER Dock Functionality. ARK-1251 User Manual...
  • Page 104 TCSS Setup Menu TCSS xHCI Support  Enable/Disable TCSS xHCI. ARK-1251 User Manual...
  • Page 105 TCSS USB Configuration TCSS CPU USB Port Disable Override  Selectively Enable/Disable the corresponding USB port from reporting a Device Connection to the controller. ARK-1251 User Manual...
  • Page 106 VMD Setup Menu Enable VMD Controller  Enable/Disable to VMD controller. ARK-1251 User Manual...
  • Page 107 Check to enable VT-d function on MCH.\nThis option will be grayed out when 'X2APIC Enable' option is configured as 'Enabled'. Pre-boot DMA Protection  Enable DMA Protection in Pre-boot environment (If DMAR table is installed in DXE and If VTD_INFO_PPI is installed in PEI.) ARK-1251 User Manual...
  • Page 108 X2APIC Opt Out  Enable/Disable X2APIC_OPT_OUT bit. This option will be grayed out when 'X2APIC Enable' option is configured as 'Enabled'. DMA Control Guarantee  Enable/Disable DMA_CONTROL_GUARANTEE bit. 3.2.3.2 PCIE Configuration ARK-1251 User Manual...
  • Page 109 Platform-POR = clock is assigned to PCIe port or LAN according to board lay- out. Enabled = keep clock enabledeven if unused. Disabled = Disable clock. C1kReq for ClockX  Platform-POR = CLKREQ signal is assigned to CLKSRC according to board layout. Disabled = CLKREQ will not be used. ARK-1251 User Manual...
  • Page 110 PCI Express Root Port PXPA3 (M.2 M-Key) PCI Express Root Port PXPA3  Control the PCI Express Root Port. ASPM  Set the ASPM Level: Force L0s - Force all links to L0s State. AUTO - BIOS auto configure. DISABLE - Disables ASPM ARK-1251 User Manual...
  • Page 111 L1 Substates  PCI Express L1 Substates settings. PCIe Speed  Configure PCIe Speed. PCI Express Root Port PXPD(M.2 M-Key) ARK-1251 User Manual...
  • Page 112 Set the ASPM Level: Force L0s - Force all links to L0s State. AUTO - BIOS auto configure. DISABLE - Disables ASPM L1 Substates  PCI Express L1 Substates settings. PCIe Speed  Configure PCIe Speed. 3.2.3.3 PCH-IO Configuration ARK-1251 User Manual...
  • Page 113 PortID mask for certain end point (e.g. PSFx). The option is invalid if POST- BOOT SAI is set. Flash Protection Range Registers (FPRR)  Enable Flash Protection Range Registers. SPD Write Disable  Enable/Disable setting SPD Write Disable. For security recommendations, SPD write disable bit must be set. ARK-1251 User Manual...
  • Page 114  Enable/Disable SATA Port 1~2 DevSlp. For DevSlp to work, both the hard drive and SATA port need to support the DevSlp function; otherwise an unexpected behavior might happen. Please check the board design before enabling it. ARK-1251 User Manual...
  • Page 115 Select 'Disabled' for pin-based debug. If pin-based debug is enabled but USB overcurrent is not disabled, USB DbC does not work. USB Overcurrent Lock  Select 'Enabled' if Overcurrent functionality is used. Enabling this will make xHCI controller consume the Overcurrent mapping data. ARK-1251 User Manual...
  • Page 116 USB Port Disable Override.  Selectively Enable/Disable the corresponding USB port from reporting a Device Connection to the controller Security Configuration ARK-1251 User Manual...
  • Page 117 Enable/Disable the PCH BIOS Lock Enable feature. It is required to be enabled to ensure SMM protection of flash. Force unlock on all GPIO pads  If Enabled, the BIOS will force all GPIO pads to be in the unlocked state. HD Audio Configuration ARK-1251 User Manual...
  • Page 118 HD Audio  Control Detection of the HD-Audio device. 3.2.4 Security ARK-1251 User Manual...
  • Page 119 Administrator Password  Set Administrator Password. User Password  Set User Password. Secure Boot ARK-1251 User Manual...
  • Page 120 The Secure Boot feature is Active if Secure Boot is Enabled, Platform Key (PK) is enrolled, and the System is in User mode. The mode change requires a plat- form reset. Secure Boot Mode  Secure Boot mode options: Standard or Custom. Expert Key Management ARK-1251 User Manual...
  • Page 121 Setup Prompt Timeout  Number of seconds to wait for setup activation key. 65535 (0xFFFF) means indefinite waiting. Bootup NumLock State  Select the keyboard NumLock state. Quiet Boot  Enables or disables the Quiet Boot option. ARK-1251 User Manual...
  • Page 122 Restore Defaults  Restore/Load Default values for all the setup options. Save as User Defaults  Save the changes done so far as User Defaults. Restore User Defaults  Restore the User Defaults to all the setup options. ARK-1251 User Manual...
  • Page 123 3.2.7 MEBx ARK-1251 User Manual...
  • Page 124 No part of this publication may be reproduced in any form or by any means, electronic, photocopying, recording or otherwise, without prior written permis- sion of the publisher. All brand and product names are trademarks or registered trademarks of their respective companies. © Advantech Co., Ltd. 2025...