RS232 9 Way Male to Female Null Modem Adapter Connector Serial Pin DB9 Cable

RS232 Male to Female Null Modem Adapter

Overview - If this null modem adapter is attached to another null modem cable, it will make the connections within the cable straight, it could be used with a straight cable to make it 'null modem'. The wiring within null modem allows for data tranfwer between two PCs. Null modem cables are commonly used to update satellite and cable receivers from your PC.

Wiring -

Pin 1 to Pin 6 & 4
Pin 2 to Pin 3
Pin 3 to Pin 2
Pin 4 to Pin 1 & 6
Pin 5 to Pin 5
Pin 6 to Pin 4 & 1
Pin 7 to Pin 8
Pin 8 to Pin 7
Pin 9 - Not Connected (as seen in the picture)