ADLINK DLAP-4000 Deployment and BIOS Optimization

ADLINK DLAP-4000 Embedded Industrial Control Computer: A Complete Guide to Deployment, BIOS Tuning, and Troubleshooting

In industrial automation, machine vision, and edge AI inference applications, the DLAP-4000 series relies on 8th/9th generation Intel ®  Core ™ The processor (up to 8 cores and 16 threads), dual DDR4 SO-DIMM (up to 32GB), PCIe x16 expansion slots (capable of accommodating NVIDIA Quadro RTX series graphics cards), and compact fanless/active cooling hybrid design make it an ideal choice for high-performance embedded computing. However, in practical implementation, engineers often encounter problems such as improper BIOS configuration leading to peripheral device recognition failure, serial port mode switching failure, GPIO direction error, and insufficient heat dissipation margin. This article outlines the key points of the entire lifecycle operation from hardware installation, BIOS fine settings, storage deployment to typical troubleshooting, helping you maximize the performance of DLAP-4000.

Unpacking and Hardware Overview

The DLAP-4000 factory includes a host, power cord (US standard), wall bracket, and screw kit. Its size is 220 × 300 × 150mm (W × D × H), providing front I/O: power button (with blue LED), reset button, storage indicator light, 2 × USB 2.0, 4 × USB 3.1 Gen1, audio interface (Line-in/out/mic); Rear I/O: AC power input, 5 × COM (D-sub 9, where COM1 supports RS-232/422/485, COM2-5 only supports RS-232), 8-bit GPIO (D-sub 15), DisplayPort (up to 4096 × 4096) 2304@60Hz ）HDMI (4096 x) 2160@30Hz ）DVI-D (1920 × 1920) 1200@60Hz ）And dual GbE (Realtek RTL8111G).

Internal expansion: 1 x PCIe x16 (for PEG graphics cards), 1 x Mini PCIe (USB+PCIe x1), 1 x M.2 2280 (SATA 6Gb/s), 2 x 2.5-inch SATA hard drive slots (replaceable with 1 3.5-inch hard drive), 2 x DDR4 SO-DIMM slots. The power supply adopts Flex ATX, providing 300W/500W options and supporting 100-240V AC wide voltage input.

Storage installation: 2.5 "/3.5" HDD/SSD and M.2 SSD

DLAP-4000 offers two built-in SATA drive slots, compatible with 2.5-inch (7mm/9.5mm) and 3.5-inch (thickness ≤ 26.1mm) hard drives. The installation steps strictly follow the manual:

Dismantling the top cover: Remove the 6 screws on the top of the chassis and remove the two top panels.

Remove the hard drive bracket: Remove the 4 screws that secure the bracket and pull it out as a whole.

Fixed hard drive:

2.5 "disk: Use M3 × 4mm screws (inside the screw package) to fix it in the corresponding hole of the bracket (see Figure 4-2, position 1).

3.5 "disk: Use # 6-32 × 6.35mm screws to fix it on the other side of the bracket (Figure 4-3, position 2).

If two 2.5 "disks are installed simultaneously, they can be placed side by side (Figure 4-4); if one 2.5" disk and one 3.5 "disk are installed, the layout should follow Figure 4-5.

Reinstall bracket: Use the original 4 screws to fix the bracket back to the chassis and cover the top plate.

M. 2 SSD installation (supports 2280 SATA protocol):

Unscrew the bottom cover screws and remove the cover.

Insert the M.2 SSD diagonally into the slot, press down and secure it with M3 × 4mm screws.

Note: M.2 only supports SATA mode and does not support NVMe PCIe. Please confirm the protocol when purchasing.

Common problem: The system cannot recognize the hard drive. Check if the SATA cable is loose; Confirm in BIOS that "SATA Controller" is enabled and "SATA Mode Selection" is selected as AHCI (if installing Windows 7/10, AHCI needs to be selected); For the 3.5 "mechanical disk, confirm that the power supply is sufficient (the 500W version is more reliable).

BIOS Depth Settings: From Basic to Advanced

DLAP-4000 uses AMI UEFI BIOS, press ESC or DEL to enter when booting up. The following are the core configuration modules and common engineering modifications.

3.1 Main Menu

System Date/Time: Set the system time for logging timestamps.

Power Type: Read only displays the current power mode (AC).

3.2 Advanced Menu

3.2.1 CPU Configuration

Hyper Threading: It is recommended to enable it (supports Windows/Linux optimization), and it can be turned off if the operating system does not support it.

Active Processor Cores: Can limit the number of cores (for power control or software licensing restrictions).

Intel SpeedStep&Turbo Mode: It is recommended to keep it enabled for dynamic frequency adjustment.

C-states: Enabling allows the CPU to enter a low-power state, but in scenarios where real-time performance is extremely high (such as motion control), it is recommended to disable C-states to avoid wake-up delays.

Package C State Limit: By default, "Auto" is sufficient. In case of wake-up delay, it can be limited to C3 or lower.

3.2.2 NCT6106D Super IO Configuration (Serial Port and GPIO Core)

This is the most critical setting area for industrial control applications.

Serial port 1-5 configuration:

Each serial port can be independently enabled/disabled.

Change Settings: You can manually change the I/O base address and IRQ (to avoid resource conflicts). Default COM1=3F8h/IRQ4，COM2=2F8h/IRQ3，COM3=3E8h/IRQ5，COM4=2E8h/IRQ5，COM5=2E0h/IRQ10。 If inserting a PCIe serial port card, adjustments may be necessary to avoid conflicts.

COM Mode Select (COM1 only): Supports RS-232, RS-485 half duplex, and RS-422 full duplex. After selection, it needs to be restarted to take effect.

WatchDog: Can set timeout values (in seconds or minutes) for automatic reset of system exceptions. It is recommended to set it to 60-120 seconds in the production environment.

3.2.3 Hardware Monitoring and Intelligent Fans

NCT6106D HW Monitor: Real time viewing of CPU temperature, system temperature, fan speed, and various voltage values.

Smart Fan: Supports "SMART FAN IV mode" and "Manual mode".

In IV mode, the temperature PWM curve can be set (4 temperature points correspond to 4 PWM values). For example, temperature 25 ℃ → PWM 80, 40 ℃ → 130, 55 ℃ → 190, 62 ℃ → 255 (full speed). The default value has been optimized, but if a high-power graphics card is installed in the chassis, it is recommended to increase the fan response (such as lowering the temperature point).

Manual mode directly fixes the PWM output (0~255) for constant speed scenarios.

3.2.4 S5 RTC wake-up

After activation, it can automatically turn on at the set date and time (with hardware support), suitable for unmanned scheduled tasks.

3.2.5 USB Configuration

XHCI Compliance Mode: Disabled by default. Only enable when USB consistency testing is required, otherwise keep disabled to enhance compatibility.

USB Standby Power: Control whether each USB port is powered during standby mode. If connecting a keyboard and mouse for wake-up, the corresponding port needs to be enabled.

3.2.6 CSM Configuration (Compatibility Support Module)

When installing traditional Legacy operating systems (such as Windows 7 32-bit), CSM Support needs to be enabled and each Option ROM needs to be set to "Legacy" mode.

If only using UEFI system (Win10/11), CSM can be turned off to speed up startup.

3.2.7 Network Stack Configuration

Network Stack must be enabled before using PCIe network boot.

IPv4/IPv6 PCIe support can be enabled separately, and wait timeout (in seconds) and media detection times can be set.

Chipset Key Settings

4.1 System Agent

Memory Configuration: Can view DIMM information and frequency. Max TOLUD (Top of Low Usable DRAM) recommends maintaining "Dynamic" and the system automatically adjusts the space left for MMIO. If installing a high-capacity graphics card, manually increasing it (such as 3GB) can avoid memory address conflicts.

Graphics Configuration：

Primary Display: When selecting "Auto", prioritize using PEG (if inserted) or IGFX (integrated display). If you need to force integrated display output, select "IGFX".

DVMT Pre Allocated: Fixed memory allocated to integrated displays, recommended to be 64MB or above to ensure high-resolution display without flicker.

LVDS Control: Although DLAP-4000 does not have onboard LVDS, this option is reserved for customized model reference.

4.2 PCH-IO Configuration

PCI Express Root Port: Each PCIe port (Mini PCIe, LAN1, LAN2) can be individually enabled/disabled. Disabling unused ports can reduce resource consumption.

SATA Configuration: Ensure that the SATA controller is enabled and select AHCI mode (RST mode is used for RAID, but this platform only has 2 SATA ports, AHCI is sufficient).

HD Audio: enabled by default, can be turned off to reduce interruptions if no audio is needed.

Restore AC Power Loss: Set the behavior after power failure recovery. Recommend "Last State" or "Power On" to avoid manually pressing the power button on site.

GPIO Group Control: Here, the direction (input/output) and default level (high/low) of 8 GPIO pins can be configured separately. Attention: GPIO direction priority is higher than the operating system driver. If GPIO cannot be controlled after system startup, please check the settings here first.

Security and Startup

Secure Boot: If you need to install non Microsoft signed drivers or Linux, you need to disable Secure Boot or set it to "Custom" mode and manually import the key.

Boot Mode: Optional LEGACY or UEFI, automatically adjusts CSM parameters. Most new systems choose UEFI.

Boot Option Priority: The order can be set (hard drive, optical drive, USB, network, etc.). Suggest setting the system disk as the first priority.

Thermal management and environmental adaptability

The nominal operating temperature of DLAP-4000 is 0 ℃~50 ℃ (depending on configuration). In practical engineering, if installing high-power CPUs (65W i7-9700E) and high-end graphics cards (such as RTX 5000, with a power consumption of 160W), it is necessary to pay attention to heat dissipation:

Active cooling: There are two fans inside the chassis (CPU fan and system fan). The speed can be monitored in the BIOS. If the CPU temperature exceeds 80 ℃ (PECI reading), the fan should be checked for blockage or dust accumulation on the heat sink.

Intelligent Fan Curve Optimization: For high load scenarios, it is recommended to set the four temperature points of the CPU Smart Fan to 40 ℃/55 ℃/70 ℃/85 ℃, corresponding to PWM values of 100/150/200/255, and intervene in cooling in advance.

Chassis installation: Ensure that the left, right, and rear ventilation openings are unobstructed, and the front and rear air flow is smooth. If installed in a closed cabinet, a cabinet exhaust fan needs to be installed.

High ambient temperature applications: If the ambient temperature exceeds 40 ℃, it is recommended to use a 35W TDP "TE" series processor (such as i7-9700TE) and reduce the power consumption wall (limited by the Package C state limit in the BIOS).

Common faults and quick troubleshooting

Possible causes and solutions for the fault phenomenon

No display (black screen) when powered on, graphics card not installed correctly; BIOS displays incorrect output priority order. If using a discrete graphics card, check if the power supply is sufficient; Clear CMOS (short circuit pins 2-3 of CLCMOS1 jumper for 3 seconds) and restore to default; Try integrated display output (the motherboard comes with DP/HDMI)

COM1 RS-485 communication failure mode not switched; The terminal resistor is not connected; Direction control not enabled. Confirm COM Mode Select as RS-485 Half in BIOS; Check the wiring (DATA+connected to TXD422+, DATA - connected to TXD422-); Some applications require RTS control direction, and automatic direction can be enabled in BIOS (if available)

GPIO cannot read external level. GPIO direction is configured as output; Level mismatch (3.3V vs 5V), enter BIOS → PCH-IO → GPIO Group Control, confirm that the corresponding pin direction is "Input"; Measure whether the external signal voltage is within the range of 0~3.3V (DLAP-4000 GPIO has 3.3V logic)

M. 2 SSD cannot recognize protocol error (NVMe vs SATA) DLAP-4000 only supports SATA protocol M.2, replace with SATA model; Check if the M.2 interface is securely plugged in

The system fan speed is abnormal (too high/too low). The Smart Fan temperature point is set improperly. Enter the HW Monitor to check the current temperature and adjust the temperature PWM curve accordingly; If the fan supports PWM, set it to IV mode; If it is a DC fan, the speed can only be manually fixed

The USB 3.0 interface only works at 2.0 speed and XHCI mode is not enabled; Driver not installed in BIOS. Check USB Configuration to ensure XHCI Compliance Mode is disabled; Install Intel USB 3.0 driver (Win10 auto recognition)

Only one of the dual network ports is valid. The corresponding Root Port in BIOS is disabled. Check PCH-IO → PCI Express Configuration and confirm that Root Port 11 (LAN1) and 12 (LAN2) are both set to Enabled

The system cannot boot from the hard drive due to incorrect boot sequence; If the partition table is not UEFI, enter the Boot menu and adjust Boot Option # 1 to the hard disk; If the hard disk is an MBR partition and CSM is not turned on, CSM needs to be turned on and Boot Mode set to LEGACY

Recommendations for firmware upgrade and maintenance

BIOS upgrade: Download the latest BIOS version (. bin file) from the ADLINK official website and use UEFI Shell or Windows refresh tool. Be sure to back up the current configuration before upgrading.

CMOS reset: When encountering an inability to power on and suspecting BIOS settings errors, short circuit the CLCMOS1 jumper (pins 2-3) on the motherboard for more than 3 seconds to restore the factory settings.

Regular dust removal: Open the chassis every six months and use compressed air to clean the dust accumulation on the fan and heat sink to prevent overheating and frequency reduction.

Log monitoring: It is recommended to enable system logs to record CPU temperature, fan speed, and GPIO status for post analysis of occasional faults.