DB9 - DB25
Serial Adapter Pinout


DB9 Male Connector  DB9 Female Connector
DB25 Male Connector
DB25 Female Connector

DB9 - DB25 SERIAL ADAPTER
DB9
SIGNAL
DB25
SIGNAL
1
DCD
8
DCD
2
RXD
3
RXD
3
TXD
2
TXD
4
DTR
20
DTR
5
GND
7
GND
6
DSR
6
DSR
7
RTS
4
RTS
8
CTS
5
CTS
9
RI
22
RI