In the field of industrial automation, machine vision and edge computing, the ATX industrial motherboard needs to take into account high-performance computing, multi PCI expansion, rich serial ports and long-term reliable operation. The IMB-M43H launched by ADLINK is based on Intel ® H110 chipset, supporting 6th and 7th generation Core ™ I7/i5/i3/Pentium/Celebron LGA1151 processor, equipped with DDR4 memory PCIe 3.0、 5 PCI slots, dual gigabit network cards, and 6 COM ports (with COM5/6 supporting RS232/422/485 jumper selection), and providing 16 in 16 out GPIO, provide a highly competitive upgrade platform for systems where traditional PCI cards coexist with the new generation of high-speed I/O. This article will provide engineers with a complete deployment and tuning guide from the perspectives of hardware layout, jumper configuration, interface definition, BIOS key settings, and system resource allocation.
Product positioning and core advantages
IMB-M43H adopts the standard ATX board type (305mm × 244mm) and is designed for applications such as industrial computing, testing and measurement, and security monitoring. Core highlights:
CPU compatibility: Supports 6th generation Skylake and 7th generation Kaby Lake desktop processors, offering a wide range of choices from Celeron G3900 (2.8GHz/2 cores) to Core i7-7700 (3.6GHz/4 cores with 8 threads), with TDP coverage ranging from 35W to 65W, meeting the flexible balance between performance and power consumption.
Memory: Two 288 pin DDR4 DIMM slots, supporting dual channel 2133MHz, up to 32GB, providing ample space for big data caching and virtualization.
Expansion slots: 1 x PCIe x16 Gen3 (graphics card), 1 x PCIe x4 Gen2, 5 x PCI 2.2, compatible with a large number of traditional data acquisition cards and motion control cards.
Storage: 4 x SATA 6Gb/s, supports RAID 0/1/5/10 (Intel RST), can form high-speed storage arrays.
I/O intensive: rear dual USB 3.0, dual USB 2.0, 2 COM (supporting RS232/422/485), VGA+HDMI dual display, dual Gigabit LAN (Intel I219-LM+I211-AT); The board provides an additional 2 USB 2.0 pins, 4 RS-232 pins, LPT parallel port, 16 in 16 out GPIO, SMBus/I2C interface, TPM and LPC debugging ports.
Power and Mode: Supports AT/ATX mode switching, AC power-off recovery settings, multiple wake-up sources (LAN, USB, keyboard and mouse, RTC alarm).
This motherboard is particularly suitable for industrial control stations that require multiple serial devices to be driven simultaneously, multiple PCI cards to be connected, and high-performance CPU processing.
Hardware Layout and Interface Overview
2.1 Position of onboard connectors (see Figure 3 in the manual)
Power supply: 24 pin EATXPWR1+8-pin ATX12V1 (must be connected simultaneously).
Fans: CPU_SAN1, CHA_SAN1, SYS_SAN1 (all 4-pin PWM, supporting speed monitoring).
Storage: 4 SATA ports (SATA1~4), all supporting 6Gb/s.
Pin arrangement: USB5-6, COM1~COM4 (9-pin), LPT1, FP-AUDIO, F_PANEL (front panel switch/LED), JCASE1 (chassis intrusion), JLPC1 (LPC debugging), SPI1 (SPI flash programming).
Jumper: JCMOS1 (clear CMOS), JPSON1 (AT/ATX selection), JSETCOM5/JSETCOM6 (COM5/6 mode selection), JPW1 (GPIO power selection), JPW2 (SMBus power selection), JPW3 (I2C power selection).
GPIO: JDI01 (40 pin 2.0mm, 16 in 16 out, TTL level 3.3V, pin 40 for power supply, selected by JPW1).
2.2 Rear I/O panel (Figure 2)
1 × PS/2 keyboard mouse composite mouth
1×VGA + 1×HDMI
2×USB 3.0 + 2×USB 2.0
Dual RJ-45 (LAN1/LAN2, with dual color LED indicating speed and activity)
3 x Audio (Line In, Line Out, Mic In)
2 x COM ports (COM5 and COM6, stacked, with COM5 at the top)
Note: Although COM5/6 is located in the rear I/O, its RS232/422/485 mode is jointly controlled by onboard jumpers (JSETCOM5/JSETCOM6) and BIOS, which is different from other COMs (1-4) that only support RS232.
Detailed settings for jumpers and switches
3.1 AT/ATX mode selection (JPSON1)
1-2 Short circuit: AT mode - power on immediately, suitable for unmanned or automatic startup scenarios.
2-3 Short circuit (default): ATX mode - requires pressing the power button to turn on.
3.2 Clearing CMOS (JCMOS1)
1-2 (default): Normal state.
2-3 Short circuit: Clear CMOS. Power off is required for operation, short circuit 2-3 for about 5 seconds, then move back 1-2 and power on again.
3.3 COM5/COM6 mode jumper (JSETCOM5/JSETCOM6)
These two jumpers are both 2 × 9 (2.0mm spacing) pin headers, used to select RS232, RS422, or RS485 modes. The specific short-circuit combination is as follows:
RS232 (default): Short circuit 5-6, 7-9, 8-10, 13-15, 14-16.
RS422: Short circuit 3-4, 9-11, 10-12, 15-17, 16-18.
RS485: Short circuit 1-2, 9-11, 10-12, 15-17, 16-19 (note that pin 19 is newly added).
Key: When using RS485, it is also necessary to enable the "RS485 Auto Flow" function in the corresponding COM configuration of the BIOS (see sections 7.3.9/7.3.10) to enable automatic transmission and reception control and avoid software intervention in RTS.
3.4 GPIO Power Supply Selection (JPW1)
The 40th pin of JDI01 is GPIO power output, selected by JPW1: