ADLINK IMB-M42H - Manual (Page 16)

6 Introduction
Table 1-2: IMB-M42H I/O Legend
The IMB-M42H supports RS232/422/485 on COM ports 1 and 2,
with pin definitions as follows, with both COM ports configurable in
BIOS setup. See Appendix A, Super IO Configuration for details.
Table 1-3: COM Port Pin Definitions
Two LEDs on either side of the RJ-45 LAN port indicate activity
and speed as follows.
1 COM Port (COM1)
2 COM Port (COM2)
3 USB 2.0 Ports (USB2_3)
4 LAN RJ-45 Port
5 Line In
6 Line Out
7 Mic In
8 USB 2.0 Ports (USB4_5)
9 HDMI Port (HDMI1)
10 USB 3.0 Ports (USB0_1)
11 D-Sub Port (VGA1)
12 PS/2 Mouse/Keyboard Port
13 DisplayPort (DP1)
Pin RS232 RS422 RS485
1 DCD, Data Carrier Detect TX- RTX-
2 RXD, Receive Data RX+ N/A
3 TXD, Transmit Data TX+ RTX+
4 DTR, Data Terminal Ready RX- N/A
5 GND GND GND
6 DSR, Data Set Ready N/A N/A
7 RTS, Request To Send N/A N/A
8 CTS, Clear To Send N/A N/A
9 No Power/+5V/+12V N/A N/A