DB9 9Pin RS232 Serial Port Male to Male Null Modem Adapter Gender Changer

Null Modem Adapter
DB-9 Male to DB-9 Male
Using Full handshake Wiring Listed Below
Used to connect up specialized Serial Devices and Computers

Pin Wiring
1-4
2-3
3-2
4-6,1
5-5
6-4
7-8
8-7
9- N/C
Shield-Shield