RS-232 DB-25 Male Connector Pin-outs
RS-232 Signal Pin-outs of DB-25 Male
Pin 1
Pin 2
TxD
Pin 3
RxD
Pin 4
RTS
Pin 5
CTS
Pin 6
DSR
Pin 7
GND
Pin 8
DCD
Pin 9
Pin 10
Pin 11
Pin 12
Pin 13
Pin 14
Pin 15
Pin 16
Pin 17
Pin 18
Pin 19
Pin 20
DTR
Pin 21
Pin 22
RI
Pin 23
Pin 24
Pin 25