Nullmodem adapter, DB9 male to DB9 male, serial, RS232 adapter

DB9 null modem adapter converts a regular serial cable to null modem cable

Zero modem cable with DB9 male / female, 20 cm
Pin 2 to pin 3
Pin 3 to pin 2
Pin 5 to pin 5
Cable screen connected to DB9 male plug

Cable display is not connected to the DB9 female connector
The connectors are with finger screws

Universal null modem cable 2 x DB9 female / 2 x DB25 female.

Sold in several lengths.

Null modem cable 1 x DB9 Han / 1 x DB9 She.

negotiated in several lengths