AAEON GENE-QM77 Rev.B - Manual (Page 38)

S u b C o m p a c t B o a r d G E N E - Q M 7 7 R e v . B
Chapter 2 Quick Installation Guide 2-25
3 RS422_RX+ IN
4 NC
5 RS422_TX+ OUT ±5V
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 NC
4 NC
5 RS485_D+ I/O ±5V
6 NC
7 NC
8 NC/+5V/+12V PWR +5V/+12V
9 GND GND
Note: COM2 RS-232/422/485 can be set by BIOS setting. Default is RS-232.
Pin 8 function can be set by JP8.