Aaeon OMNI-5215-SKU, User Manual

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Chapter 2 – Hardware Information 29
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6 NC
7 RS422_RX- IN
8 NC/+5V/+12V PWR +5V/+12V
9 GND GND
RS-485
Pin Pin Name Signal Type Signal level
1 RS485_D- I/O ±5V
2 NC
3 I/O ±5V
4 NC
5 NC
6 NC
7 NC
8 NC/+5V/+12V PWR +5V/+12V
9 GND 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)
RS-232
Pin Pin Name Signal Type Signal level
1 DCD IN
2 DSR IN
3 RX IN