Com Port 1 (Cn27) - Aaeon OMNI-5215-SKU User Manual

6 NC
7 RS422_RX-
8 NC/+5V/+12V
9 GND
Pin Pin Name
1 RS485_D-
2 NC
3 RS485_D+
4 NC
5 NC
6 NC
7 NC
8 NC/+5V/+12V
9 GND
* COM2 RS-232/422/485 can be set through BIOS setting. Default is RS-232.
* Pin 8 function can be set by JP11.

2.3.18 COM Port 1 (CN27)

Pin Pin Name
1 DCD
2 DSR
3 RX
Chapter 2 – Hardware Information
IN
PWR
GND
RS-485
Signal Type
I/O
I/O
PWR
GND
RS-232
Signal Type
IN
IN
IN
+5V/+12V
Signal level
±5V
±5V
+5V/+12V
Signal level
29