ADLINK MXE-5300 Fanless Industrial Control Computer Deployment and Troubleshooting Manual

4. Key points of cable connection

COM/DIO cable: Tighten the DB-62P cable firmly to the back interface, and split the other end into four DB9 serial ports (marked 1-4) and one DB25 DIO terminal. COM1/COM2 supports RS-232/422/485 mode switching (via BIOS), while COM3/COM4 only supports RS-232. DIO has 4 isolated inputs (5-24V logic high) and 4 isolated outputs (open drain, maximum 250mA/channel, requiring external pull-up power supply).

Power connection: Using 3-core pluggable terminals (V+, V -, chassis ground), input 9-32V DC. Be sure to confirm the polarity before wiring - incorrect polarity may burn out the internal protective circuit. Fix the screws on both sides of the terminal to prevent vibration from loosening.

Detailed explanation of panel interface signals and LED diagnosis

1. Front I/O

PS/2 combination interface: Can connect keyboard and mouse simultaneously through a Y-shaped cable, suitable for early industrial control environments without USB.

DVI-I-I interface: Supports VGA (analog) and DVI-D (digital) dual display outputs, up to 2048 × 1536 (analog) or 1920 × 1080 (digital). The pin definition includes CRT DDC clock/data, which can automatically identify display parameters.

USB 2.0 × 4+USB 3.0 × 2: USB 3.0 is provided by the TI TUSB7320 controller via PCIe x1 Gen2 and supports SuperSpeed. However, the manual specifically states that although the USB 3.0 port can boot a CD-ROM, it cannot install an operating system through a CD-ROM - this limitation should be noted during deployment and should be installed using a USB flash drive or network.

Dual front GbE (Intel 82574IT+82579LM): Activity/link yellow light on the left, speed green/orange light on the right (1000M is orange). 82579LM supports Intel AMT 7.0 and can be used for remote out of band management.

2. Back I/O

Dual Realtek 8111C GbE (4 network ports in total, suitable for multi network redundancy or isolation applications).

ESATA: Only data signal, external devices require independent power supply.

Audio: Microphone input (pink) and line output (green), using ALC269 codec, supporting 24bit/192kHz.

3. Rapid positioning of LED faults

In addition to the power blue light, the front panel also has two yellow/green LEDs:

Diagnosis (yellow): Constant light indicates no physical storage (such as HDD/SSD/CFast not connected); Flashing indicates that the memory is not installed or has poor connections - this is the primary checkpoint when the screen goes black during startup.

HDD (green): Flashing indicates SATA storage activity.

If the power light does not light up after powering on, first test whether the input voltage of the power supply is within the range of 9-32V; If the power light is on but there is no display, observe the diagnostic LED flashing mode and prioritize unplugging the memory.

BIOS Depth Setting: Balancing Performance and Reliability

Press Del to enter AMI UEFI BIOS (version 2.11.1210) during startup. The following are tuning suggestions for key menus.

1. Main Menu

Only set the system date/time (24-hour clock), the rest is read-only BIOS version information.

2. Advanced menu

ACPI Settings: It is recommended to enable Hibernation and set the ACPI Sleep State to S3 to support energy saving. Lock Legacy Resource remains default to avoid conflicts with legacy serial port resources.

CPU Configuration: For industrial real-time applications, it is recommended to disable the following power-saving features: C1E, C3/C6/C7 Report, as well as EIST (SpeedStep) and Turbo Mode, to eliminate timing jitter caused by frequency fluctuations. Simultaneously enable Execute Disable Bit (to prevent buffer overflow) and Hardware Prefetcher (to improve memory throughput). Intel Virtualization Technology can be turned on as needed (if using virtual machines or containers).

Onboard Device Configuration: Can enable/disable four network cards and their PXE ROMs separately. If only two network ports are needed, additional network cards can be turned off to reduce power consumption.

Advanced Power Management: Restore On AC Power Loss can be selected as "Power On", "Power Off", or "Last State" - for unmanned sites, "Power On" is recommended. In addition, RTC Wakeup in S5 can be enabled to achieve timed boot up (which needs to be set in the system).

SATA Configuration: It is recommended to set SATA Mode to "AHCI" (supporting hot swapping and NCQ) to avoid using "IDE" mode (limiting performance). CFast and eSATA ports can also be independently enabled/disabled.

AMT Configuration: If remote management is required, enable Intel AMT and open the Setup Prompt (you can enter MEBx configuration by pressing Ctrl+P during POST). The default password needs to be changed in MEBx.

USB Configuration: Legacy USB Support is set to "Auto" for use with USB drives under DOS, USB 3.0 Support is enabled (but note the installation restrictions mentioned above).

Super IO Configuration: Set RS-232/422/485 modes for COM1/COM2 respectively (according to fieldbus requirements). COM3/COM4 is fixed as RS-232.

H/W Monitor: Real time monitoring of CPU temperature, motherboard temperature, and various voltages (+3.3V,+5V,+12V, etc.) to determine whether the heat dissipation meets the standard.