Aaeon PCM-4330 Instructions Manual page 65

Two serial RS-232-C interfaces (COM1 and COM2) are located on the PCM-4330
PC/104 board computer as 2-row 10-pin male connectors.
COM1 & COM2
2
1
4
3
6
5
8
7
10
9
1 DCD#
3 RxD
5 TxD
7 DTR#
9 GND
Data Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Ground
2 DSR#
4 RTS#
6 CTS#
8 RI#
10 N.C.
Data Set Ready
Request to Send
Clear to Send
Ring Indicator
-