AAEON EPIC-QM77 - Manual (Page 54)

E P I C B o a r d E P I C - Q M 7 7
Chapter 2 Quick Installation Guide 2-40
11 RXD2(422RXD+)
IN
13 DTR#2(422RXD-)
OUT
15 DSR#2
IN
17 CTS#2
IN
Pin Pin Name Signal Type Signal Level
2 RXD#1
IN
4 DTR#1
OUT
6 DSR#1
IN
8 CTS#1
IN
10
DCD#2
(485D-)(422TXD-)
IN
12
TXD2
(485D+)(422TXD+) OUT
14 GND
OUT
16 RTS#2
OUT
18 RI#2
IN
2.46 RS-232 Serial Port Connector (COM3)