Com3 + Com4 Connector Rs232/Rs422/Rs485 (Cn62) - Asus AAEON BOXER-6839-CFL User Manual

2.4.11

COM3 + COM4 Connector RS232/RS422/RS485 (CN62)

Pin
Signal
1 DCD3
2 RX3
3 TX3
4 DTR3
5 GND
6 DSR3
7 RTS3
8 CTS3
9 RI3
10 DCD4
11 RX4
12 TX4
13 DTR4
14 GND
15 DSR4
16 RTS4
17 CTS4
18 RI4
Chapter 2 – Hardware Information
Signal Type
Top Port (COM3)
IN
IN
OUT
OUT
GND
IN
OUT
IN
IN
Bottom Port (COM4)
IN
IN
OUT
OUT
GND
IN
OUT
IN
IN
Signal Level
±9V
±9V
±9V
±9V
±9V
±9V
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