Null Modem Cables
8 products
Null modem cables with 9 and 25 way D type connectors, in lengths from 2m to 10m.
2m Null Modem Cable D9 Female to D25 Male
£4.78 inc VAT
2m Null Modem Cable D9 Female to Female
£4.78 inc VAT
2m Null Modem Cable D9 Male to D9 Female
£5.18 inc VAT
Using a null modem cable
A null modem cable connects two serial devices directly, crossing the send and receive lines. It is used to connect a computer to another computer, a terminal or the console port on some network equipment. Check whether each device has a 9 or 25 pin connector and whether it is male or female.