Serial Connector and Null Modem Cable
RS-232 9-pin Connector Pin Out
RS-232 9-pin
Direction
Male
Connector
1
←
2
→
3
4
5
6
7
8
9
Serial Connector and Null Modem Cable
Function
Not Connected
RXD
TXD
Not Connected
GND
Not Connected
Not Connected
Not Connected
Not Connected
A-3