AAEON EPIC-QM77 - Manual (Page 55)

E P I C B o a r d E P I C - Q M 7 7
Chapter 2 Quick Installation Guide 2-41
Pin Pin Name Signal Type Signal Level
1 DCD#3 IN
2 DSR#3 IN
3 RXD3 IN
4 RTS#3 OUT
5 TXD3 OUT
6 CTS#3 IN
7 DTR#3 OUT
8 RI#3 IN
2.47 RS-232 Serial Port Connector (COM4)
Pin Pin Name Signal Type Signal Level
1 DCD#4 IN
2 DSR#4 IN
3 RXD4 IN
4 RTS#4 OUT
5 TXD4 OUT
6 CTS#4 IN
7 DTR#4 OUT
8 RI#4 IN
9 GND GND