Advantech ARK-2251 User Manual
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Advantech ARK-2251 User Manual

Fanless embedded box computer
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ARK-2251
Fanless Embedded Box
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Summary of Contents for Advantech ARK-2251

  • Page 1 User Manual ARK-2251 Fanless Embedded Box Computer...
  • Page 2 This package contains a hard-copy user manual in Chinese for China CCC certifica- tion purposes. There is an English user manual included as a PDF file on the CD. Please disregard the Chinese hard copy user manual if the product is not to be sold and/or installed in China. ARK-2251 User Manual...
  • Page 3 The documentation and the software included with this product are copyrighted 2023 by Advantech Co., Ltd. All rights are reserved. Advantech Co., Ltd. reserves the right to make improvements in the products described in this manual at any time without notice.
  • Page 4 Because of Advantech’s high quality-control standards and rigorous testing, most of our customers never need to use our repair service. If an Advantech product is defec- tive, it will be repaired or replaced at no charge during the warranty period. For out- of-warranty repairs, you will be billed according to the cost of replacement materials, service time and freight.
  • Page 5 Technical Support and Assistance Visit the Advantech website at www.advantech.com/support to obtain the latest product information. 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 Power cable 3-pin 183 cm, USA type 1702002605 Power cable 3-pin 183 cm, EU type 1702031801 Power cable 3-pin 183 cm, UK type 1700000237 Power cable 3-pin 183 cm, PSE type 1700024369-01 1M HDMI cable 1700031560-01 1.8M HDMI cable ARK-2251 User Manual...
  • 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 statements con- tained herein. The product is intended to be supplied by an UL listed power Supply suitable for use at minimum Tma 60 °C which output is rated: 12-24Vdc, 7.5-3.75A min.
  • Page 8 Remplacez uniquement avec le même type ou un type équivalent recommandé par le fabricant. Jetez les piles usagées conformément aux instructions du fabricant. Débranchez toujours complètement le cordon d'alimentation de votre châssis lorsque vous utilisez du matériel. Ne faites pas de connexion quand l'appareil ARK-2251 User Manual viii...
  • Page 9 1: 1982 n'est pas supérieur à 70 dB (A). AVERTISSEMENT: Cet ensemble d'instructions est donné conformément à la norme CEI 704-1. Advantech décline toute responsabilité quant à l'exactitude des déclarations contenues dans ce. Ce produit est destiné à être alimenté par un bloc d'alimentation homologué UL adapté...
  • Page 10 ARK-2251 User Manual...

  • Page 11: Table Of Contents

    Table 2.8: SW_422_4 Setting: RS-485/RS-422 Failsafe... 11 Table 2.9: SW_422_5 Setting: RS-485/RS-422 Failsafe... 11 Table 2.10:SW_422_6 Setting: RS-485/RS-422 Failsafe... 12 System IO ....................12 Figure 2.2 ARK-2251 Front and Rear I/O Connector Diagram.. 12 External I/O ..................... 13 2.4.1 Power On/Off Button..............13 Figure 2.3 Power ON/OFF Button ..........
  • Page 12 Introduction ..................... 28 Entering BIOS Setup................28 3.2.1 Main Setup.................. 28 3.2.2 Advanced BIOS Features Setup..........29 3.2.3 Chipset Configuration ..............82 3.2.4 Security..................98 3.2.5 Boot ..................100 3.2.6 Save & Exit ................101 3.2.7 MEBx ..................102 ARK-2251 User Manual...

  • Page 13: Chapter 1 General Introduction

    Chapter General Introduction This chapter details background information on the ARK-2251 series.

  • Page 14: Introduction

    Core™ i processor and essential I/O for easy access and installation. Rugged Design with Compact Dimension ARK-2251 is equipped with a dual channel memory slot that supports up to 64GB of DDR5 4800 MHz SO-DIMM. Designed for operation in harsh industrial environments, this ruggedized system supports a wide operating temperature range (-20 ~ 60°C/-4...

  • Page 15: Ethernet

    ,10A- 5A, 120W (150W for adding PoE  Module) 1.2.13 Power Consumption Typical: (OS idle mode) 19.05W for ARK-2251-S2A1, 19.30W for ARK-2251-  S3A1, 19.47W for ARK-2251-S7A1 Max.: (full loading) 38.21W for ARK-2251-S2A1, 41.23W for ARK-2251-S3A1,  42.13W for ARK-2251-S7A1...

  • Page 16: Mechanical

     1hr/axis (with Wall Mount) Shock during Operation: 30 G, IEC-60068-2-27, half sine, 11 ms duration  (with Wall Mount) EMC: CE/FCC Class B, CCC, and BSMI  Safety: UL, CB, CCC, and BSMI  Mechanical Drawing ARK-2251 User Manual...

  • Page 17: Optional Mos Modules For Idoor Expansion

    Non-Isolated RS-232, DB37, 4-Ch, PCIe Interface MOS-1130Y-0201E Isolated CANBus, 2-Ch, DB9, PCIe Interface MOS-1110Y-0101E Isolated 16 DI/8 DO, 1-Ch, DB37, PCIe Interface MOS-2120-Z1201 Dual Intel I210 GbE LAN iDoor, 2-Ch, PCIe I/F MOS-2220-Z1101E High-speed Serial COM module, 1-Ch, USB Interface ARK-2251 User Manual...
  • Page 18 ARK-2251 User Manual...

  • Page 19: Chapter 2 Hardware Installation

    Chapter Hardware Installation...

  • Page 20: Introduction

    Introduction This chapter details instructions for installing the ARK-2251 series. The following sec- tions show the internal jumper settings and the external connector pin assignments. Note! Hardware installation must be performed by the skilled personnel Jumpers 2.2.1 Jumper Description Configure the ARK-2251 to meet specific application needs by adjusting jumpers. A jumper, functioning as a metal bridge, closes an electric circuit.

  • Page 21: Jumper Locations

    2.2.3 Jumper Locations Figure 2.1 Jumper Layout 2.2.4 Jumper Settings Table 2.2: CN22 Jumper Setting: AT/ATX Mode Description ATX Mode (default) AT Mode ARK-2251 User Manual...
  • Page 22 Mini PCIe M.2 E (default) Table 2.5: ERP1 Jumper Setting: Power Saving for ERP Description ERP Disable (default) ERP Enable Table 2.6: CN20 Jumper Setting: Mini PCIe Power Selection Description Mini PCIe VCC=3.8V Mini PCIe VCC=3.3V (default) ARK-2251 User Manual...
  • Page 23 1-8, 2-7, 3-6, 4-5 Enable COM4 failsafe 1-8, 2-7, 3-6, 4-5 Disable COM4 failsafe (default) Table 2.9: SW_422_5 Setting: RS-485/RS-422 Failsafe Description 1-8, 2-7, 3-6, 4-5 Enable COM5 failsafe 1-8, 2-7, 3-6, 4-5 Disable COM5 failsafe (default) ARK-2251 User Manual...

  • Page 24: System Io

    Disable COM6 failsafe (default) System IO USB 3.1 LAN3 LAN2 LAN1 Switch Mic in Line out HDMI1 HDMI2 CANBUS DC in COM1 Button COM4 COM3 COM2 iDoor Module COM6 COM5 Figure 2.2 ARK-2251 Front and Rear I/O Connector Diagram ARK-2251 User Manual...

  • Page 25: External I/O

    External I/O 2.4.1 Power On/Off Button ARK-2251 features a power on/off button with an LED indicator on top that shows on status (ON: Green LED, OFF: Orange LED). Figure 2.3 Power ON/OFF Button 2.4.2 Power Input Connector The power input connector supports 12 ~ 24 V. The 3 pins are defined as +, -, and GND.

  • Page 26: Usb 3.1 Connector

    2.4.4 USB 3.1 Connector ARK-2251 supports 6 x USB 3.1 Gen 1 (2x are independent) interfaces, which sup- port plug-and-play functionality and hot swapping for external devices. The USB interfaces comply with USB UHCI, Rev. 3.0. Figure 2.6 USB 3.1 Connector Table 2.12: USB 3.1 PIN Definition...

  • Page 27: Hdmi Connector

    DATA+ NC represents “No Connection” 2.4.7 HDMI Connector ARK-2251 offers 2 x integrated 19-pin receptacle connector HDMI 2.0b interfaces. The HDMI link supports resolutions up to 4096x2160 @60 Hz. Figure 2.9 HDMI Connector Table 2.14: HDMI Connector PIN Definition Signal Name...

  • Page 28: Dio Connector

    DIO bit 5 DIO bit 6 DIO bit 7 2.4.9 Remote Switch Connector ARK-2251 provides a remote switch connector for power on/off via an external cable. Figure 2.11 Remote Switch Connector Table 2.16: Remote Switch Connector PIN Definition Signal Name PWRBTN...

  • Page 29: Canbus

    2.4.10 CANBus ARK-2251 provides a 6-pin terminal block for Canbus. Figure 2.12 Canbus Connector Table 2.17: CANBus Connector PIN Definition Signal Name CAN0_D- CAN1_D+ CAN0_D+ CAN1_D- Installation Note! This should be performed by skilled personnel. 2.5.1 M.2 Installation For the M.2 E KEY Loosen the 8 x screws (M3x5L) on the bottom/sides and remove the bottom cover.
  • Page 30 Install the M.2 E Key Module with the screw. Put the bottom cover back and secure it with the 8 x screws (M3x5L). For the M.2 M KEY Loosen the 8 x screws on the front/sides and remove the bottom cover. ARK-2251 User Manual...
  • Page 31 Take the bracket with thermal pad and the screw(M3*5L) out from the accessory box then install it on the right position. Install the M.2 M Key Device on the bracket. Put the bottom cover back and secure it with the 8 x screws. ARK-2251 User Manual...

  • Page 32: Memory Installation

    2.5.2 Memory Installation Remove the top cover with the wrench in the accessory box. Carefully install RAM memory into the slots ARK-2251 User Manual...

  • Page 33: Mpcie/Msata Installation

    To install a second memory module, apply the thermal pad (located in the accessory box) before installing the memory. Put the top cover back and secure it with the 8x screws 2.5.3 mPCIe/mSATA Installation Loosen the 8 x screws on the front/sides and remove the bottom cover. ARK-2251 User Manual...

  • Page 34: Adapter Installation

    Install mPCLe/mSATA module. Put the bottom cover back and secure it with the 8 x screws. 2.5.4 Adapter Installation Connect the 3-pin Phoenix connector to the DC input. ARK-2251 User Manual...

  • Page 35: Wall Mount Installation

    Wall Mount Installation Unscrew the 4 x M3x5L screws on both sides of ARK- 2251. Secure the wall mount brackets on both sides of ARK-2251 using the 4 x screws removed as shown in the above step. Dévissez les 4x vis M3x5L ou des deux côtés de l'ARK-2251.

  • Page 36: Poe Installation

    2.5.6 PoE Installation Remove the top cover with the wrench in the accessory box. ARK-2251 User Manual...
  • Page 37 Loosen the 8 x screws on the front/sides and remove the bottom cover. Attach the PoE module and then connect the cable to the ARK-2251. ARK-2251 User Manual...
  • Page 38 ARK-2251 User Manual...

  • Page 39: Chapter 3 Bios Settings

    Chapter BIOS Settings This chapter details instructions of setting BIOS configuration data.

  • Page 40: Introduction

    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-2251 BIOS setup screens.

  • Page 41: Advanced Bios Features Setup

    3.2.2 Advanced BIOS Features Setup Select the Advanced tab from the ARK-2251 setup screen to enter the Advanced BIOS Setup screen. Users can select any item in the left frame of the screen, such as CPU Configuration, to go to the sub menu for that item. Users can display an Advanced BIOS Setup option by highlighting it using the <Arrow>...
  • Page 42 WWAN DEVICE  Select the M.2 WWAN Device options to enable 4G - 7360/7560 (Intel), 5G - M80 (MediaTek) Modems 3.2.2.2 CPU Configuration ARK-2251 User Manual...
  • Page 43 Efficient-core Information ARK-2251 User Manual...
  • Page 44 Number of cores to enable in each processor package. Active Efficient-cores  Enable/Disable Per Core Disable. When Per Core Disable Configuration is enabled, selction of Active Cores and Active Efficient-cores will be disabled. Hyper-Threading  Enable/Disable Hyper-Threading Technology. ARK-2251 User Manual...
  • Page 45  Displays the Efficient-core L1 Data Cache size. L1 Instruction Cache  Displays the Efficient-core L1 Instruction Cache size. L2 Cache  Displays the Efficient-core L2 Cache size. L3 Cache  Displays the Performance-core L3 Cache size. ARK-2251 User Manual...
  • Page 46 Power and Performance – CPU Power Management Control ARK-2251 User Manual...
  • Page 47 C6DRAM  Enable/Disable moving of DRAM contents to PRM memory when CPU is in C6 state. CPU Flex Ratio Override  Enable/Disable CPU Flex Ratio Programming. ARK-2251 User Manual...
  • Page 48 Reset TPM Aux content. Txt may not functional after AUX content gets reset. L1 Data Cache  Displays the Efficient-core L1 Data Cache size. L1 Instruction Cache  Displays the Efficient-core L1 Instruction Cache size. L2 Cache  Displays the Efficient-core L2 Cache size. ARK-2251 User Manual...
  • Page 49 Enable/Disable usage of SMM_DELAYED MSR for MP sync in SMI. – SMM Use Block Indication Enable/Disable usage of SMM_BLOCKED MSR for MP sync in SMI. – SMM Use SMM en-US Indication Enable/Disable usage of SMM_ENABLE MSR for MP sync in SMI 3.2.2.3 Power & Performance ARK-2251 User Manual...
  • Page 50 CPU - Power Management Control ARK-2251 User Manual...
  • Page 51 ARK-2251 User Manual...
  • Page 52 ARK-2251 User Manual...
  • Page 53 ARK-2251 User Manual...
  • Page 54 ARK-2251 User Manual...
  • Page 55 ARK-2251 User Manual...
  • Page 56 Boot performance mode  Select the performance state that the BIOS will set before OS hand-off. Intel ® SpeedStep (tm)  Allows more than two frequency ranges to be supported. ARK-2251 User Manual...
  • Page 57 – 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 Sets the offset value as positive or negative. ARK-2251 User Manual...
  • Page 58 Set the maximum Ramp Up randomization time in micro ticks. Range is 0- 255. This is for acoustic noise mitigation Dynamic Perodicity Alteration (DPA) tuning (iv) Ramp Down Time Set the maximum Ramp Down randomization time in micro ticks. Range is 0- ARK-2251 User Manual...
  • Page 59 (xxi) VR Current Limit Current VR Current Limit (Current IccMax Value) (xxii) Core VR Fast Vmode Core VR Fast Vmode. Use to control Core Fast Vmode Enable/Disable. The value will only be effective by enabling the corresponding CEP. ARK-2251 User Manual...
  • Page 60 (xviii) IMON Slope IMON Slope defined in 1/100 increments. (xix) IMON Offset IMON Offset defined in 1/1000 increments. (xx) IMON Prefix Sets the offset value as positive or negative. (xxi) VR Current Limit Voltage Regulator Current Limit (IccMax). ARK-2251 User Manual...
  • Page 61 Active power-down current (Idd3P) in milliamps from datasheet. Must be calcu- lated on a per DIMM basis. CPU Lock Configuration  – CFG Lock Configure MSR 0xE2[15], CFG Lock bit. – Overclocking Lock Enable/Disable Overclocking Lock (BIT 20) in FLEX_RATIO(194) MSR. ARK-2251 User Manual...
  • Page 62 RC6 (Render Standby)  Check to enable render 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-2251 User Manual...
  • Page 63 When Disabled ME will be put into ME Temporarily Disabled Mode. Mamageability Features State Enable/Disable Intel Manageability features. AMT BIOS Features When disabled AMT BIOS Features are no longer supported and user is no longer able to access MEBx Setup. ARK-2251 User Manual...
  • Page 64 Change Secure Erase module behavior. Simulated: Performs SE flow with- out erasing SSD\nReal: Erase SSD. If SATA device is used, OEM could use SECURE_ERASE_HOOK_PROTOCOL to remove SATA power to skip G3 cycle. – Force Secure Erase Force Secure Erase on next boot ARK-2251 User Manual...
  • Page 65 ARK-2251 User Manual...
  • Page 66 ARK-2251 User Manual...
  • Page 67 Enabling this Feature will trigger Platform Erase Operations on the Next Boot ME Unconfig on RTC Clear When Disabled ME will not be unconfigured on RTC Clear. Core Bios Done Message Enable/Disable Core Bios Done message sent to ME CSE Data Resilience Support Enable/Disable CSE Data Resilience Support ARK-2251 User Manual...
  • Page 68 Firmware Update Configuration ME FW Image Re-Flash  Enable/Disable Me FW Image Re-Flash function. FW Update  Enable/Disable ME FW Update function. PTT Configuration ARK-2251 User Manual...
  • Page 69 Enable/Disable Extend CSME Measurement to TPM-PCR[0] and AMT Config to TPM-PCR[1] Automatic OEM Key Revocation  When enabled, BIOS will automatically send HECI command to revoke OEM keys. Invoke OEM Key Revocation  A HECI command will be sent to revoke OEM key ARK-2251 User Manual...
  • Page 70 Endorsement Hierarchy  Enable/Disable Endorsement Hierarchy Physical Presence Spec Version  Tells OS to support PPI Spec Version 1.2 or 1.3. Note some HCK tests might not support 1.3. TPM 2.0 Interface Type  Device Select  ARK-2251 User Manual...
  • Page 71 3.2.2.6 ACPI Settings Enable ACPI Auto Configuration  Enables/Disables BIOS ACPI Auto Configuration. Enable Hibernation  Enable/Disable System's ability to Hibernate (OS/S4 Sleep State) ARK-2251 User Manual...
  • Page 72 ACPI Sleep State  Select the highest ACPI sleep state the system will enter when the SUSPEND button is pressed. 3.2.2.7 iManager Configuration ARK-2251 User Manual...
  • Page 73 Serial Port 1 Configuration Serial Port  Device Settings  Change Settings  COM Port Mode  ARK-2251 User Manual...
  • Page 74 Serial Port 2 Configuration Serial Port  Device Settings  Change Settings  COM Port Mode  ARK-2251 User Manual...
  • Page 75 Serial Port 3 Configuration Serial Port  Device Settings  Change Settings  COM Port Mode  ARK-2251 User Manual...
  • Page 76 Serial Port 4 Configuration Serial Port  Device Settings  Change Settings  COM Port Mode  ARK-2251 User Manual...
  • Page 77 Hardware Monitor CPU Temperature  +3.3V   VBAT  Vcore  ARK-2251 User Manual...
  • Page 78 Watch Dog Timer Configuration Watch Dog Timer Hidden  Enabled or Disabled Watch Dog Timer Hidden Watch Dog Timer  Enabled or Disabled Watch Dog Timer function (Start before boot to OS and must stop by self) ARK-2251 User Manual...
  • Page 79 GPIO Configuration GPIO Control Enable  Choose to control GPIO by EC or user override during POST stage. ARK-2251 User Manual...
  • Page 80  Select ACPI Reporting Method for EC Devices. Active High-Speed COM Port  Standard -> Standard COM Port. High Speed -> High Speed COM Port. (Driver installation is necessary.) iManager I2C0 Control Enable/Disable SMBus0 controller on RDC ARK-2251 User Manual...
  • Page 81 SMBus Control ARK-2251 User Manual...
  • Page 82 3.2.2.8 NCT5124DSEC Super IO Configuration Super IO Chip Serial Port 5 Configuration Serial Port  Device Settings  Change Settings  COM Port Mode  ARK-2251 User Manual...
  • Page 83 Serial Port 6 Configuration Serial Port  Device Settings  Change Settings  COM Port Mode  ARK-2251 User Manual...
  • Page 84 3.2.2.9 S5 RTC Wake Settings Wake system from S5 ARK-2251 User Manual...
  • Page 85 The settings specify how the host computer and the remote computer (which the user is using) will exchange data. Both computers should have the same or compatible settings. COM1(Pci Bus, Dev0, Func0)  Console Redirection  Console Redirection Enable/Disable. ARK-2251 User Manual...
  • Page 86 Legacy Console Redirection Settings  – Redirection COM Port Select a COM port to display redirection of Legacy OS and Legacy OPROM Messages – Resolution Enable/Disable extended terminal resolution ARK-2251 User Manual...
  • Page 87 Both computers should have the same or compatible settings. 3.2.2.11 Intel TXT Information Chipset  BiosAcm  Chipset TxT  CPU TxT  Error Code  Class Code  Major Code  Minor Code  ARK-2251 User Manual...
  • Page 88 Re-Sized BAR Support – If system has Resizable BAR capable PCIe Devices, this option Enables or Disables Resizable BAR Support. – BME DMA Mitigation Re-enable Bus Master Attribute disabled during PCI enumeration for PCI Bridges after SMM Locked ARK-2251 User Manual...
  • Page 89 3.2.2.12 USB Configuration Legacy USB Support  Enables Legacy USB support. XHCI Hand-off  This is a workaround for OS without XHCI hand-off support. ARK-2251 User Manual...
  • Page 90 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. JetFlashTS4GJFV30 8.07  ARK-2251 User Manual...
  • Page 91 3.2.2.13 Network Stack Configuration Network Stack  ARK-2251 User Manual...
  • Page 92 3.2.2.14 CSM Configuration CSM Support  Enable/Disable CSM Support. ARK-2251 User Manual...
  • Page 93 3.2.2.15 NVMe Configuration ARK-2251 User Manual...

  • Page 94: Chipset Configuration

    3.2.3 Chipset Configuration Select the Chipset tab from the ARK-2251 setup screen to enter the Chipset BIOS 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.
  • Page 95 Memory Configuration  – SAM Overloading Enable/Disable SAM Overloading Graphics Configuration  ARK-2251 User Manual...
  • Page 96 – Configure GT for use Enable/Disable GT configuration in BIOS – RC1p Support Enable/Disable RC1p support. If RC1p is enabled, send a RC1p frequency request to PMA based other conditions being met – PAVP Enable Enable/Disable PAVP ARK-2251 User Manual...
  • Page 97 Control Iommu Pre-boot Behavior Above 4GB MMIO BIOS assignment  Enable/Disable above 4GB Memory Mapped I/O BIOS assignment. This is enabled automatically when Aperture Size is set to 2048MB. IPU Device (B0:D5:F0)  Enable/Disable SA IPU Device. ARK-2251 User Manual...
  • Page 98 IPU 1181 Dash Camera  ARK-2251 User Manual...
  • Page 99 PCI Express Root Port 1  – PCI Express Root Port 1 Control the PCI Express Root Port. – Connection Type Built-In: a built-in device is connected to this rootport. SlotImplemented bit ARK-2251 User Manual...
  • Page 100 Root PCI Express System Error on Correctable Error Enable/Disable – PME SCI PCI Express PME SCI Enable/Disable. – Advanced Error Reporting Advanced Error Reporting Enable/Disable. – PCIe Speed Configure PCIe Speed – Enable ClockReq Messaging Enable/Disable ClockReq Messaging ARK-2251 User Manual...
  • Page 101 Snoop Latency Override for SA PCIE. – Non Snoop Latency Override Non Snoop Latency Override for SA PCIE. – Force LTR Override Force LTR Override for SA PCIE. – LTR Lock PCIE LTR Configuration Lock 3.2.3.2 PCH-IO Configuration ARK-2251 User Manual...
  • Page 102 Specify what state to go to when power is re-applied after a power failure (G3 state). 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-2251 User Manual...
  • Page 103 PCI Express Configuration  ARK-2251 User Manual...
  • Page 104 ARK-2251 User Manual...
  • Page 105 DMI Link ASPM Control The control of Active State Power Management of the DMI Link. – PCIe function swap Enable/Disable PCIe function swap – PCH PCIE Clock Gating PCH PCI Express Clock Gating Enable/Disable for all port ARK-2251 User Manual...
  • Page 106 Transmitter Half Swing Enable/Disable Detect Timeout ● The number of milliseconds reference code will wait for link to exit Detect state for enabled ports before assuming there is no device and potentially disabling the port. Extra Bus Reserved ● ARK-2251 User Manual...
  • Page 107 SATA Controller Speed Limit Indicates the maximum speed the SATA controller can support. – Aggressive LPM Support Enable PCH to aggressively enter link power state – Serial ATA Port 1 – Software Preserve – Port 1 – External ARK-2251 User Manual...
  • Page 108 USB Overcurrent Lock Select 'Enabled' if Overcurrent functionality is used. Enabling this will make xHCI controller consume the Overcurrent mapping data. – USB Overcurrent Lock Selectively Enable/Disable the corresponding USB port from reporting a Device Connection to the controller. ARK-2251 User Manual...
  • Page 109 USB Overcurrent Lock Select 'Enabled' if Overcurrent functionality is used. Enabling this will make xHCI controller consume the Overcurrent mapping data. – USB Overcurrent Lock Selectively Enable/Disable the corresponding USB port from reporting a Device Connection to the controller. ARK-2251 User Manual...

  • Page 110: Security

    HD Audio Configuration  – HD Audio Control Detection of the HD-Audio device. 3.2.4 Security ARK-2251 User Manual...
  • Page 111 Administrator Password  Set Administrator Password User Password  Set User Password Secure Boot Mode  Secure Boot mode options: Standard or Custom. ARK-2251 User Manual...

  • Page 112: Boot

    3.2.5 Boot 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  Enable/Disable Quiet Boot option. ARK-2251 User Manual...

  • Page 113: Save & Exit

    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-2251 User Manual...

  • Page 114: Mebx

    3.2.7 MEBx MEBx  Set ME configuration. ARK-2251 User Manual...
  • Page 115 ARK-2251 User Manual...
  • Page 116 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 from the publisher. All brand and product names are trademarks or registered trademarks of their respective companies. © Advantech Co., Ltd. 2024...

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