Monoprice 101203 Data Transfer Adapter - DB9, M/F, Null Modem Mini Type 1 x 9 pin DB 9 RS 232 Serial Male 1 x 9 pin DB 9 RS 232 Serial Female

DB9, M/F, Null Modem Mini Type

RS-232, DB 9 pin male to female null modem.

Null modems are used to connect two computers or other devices together to achieve file transfer. Null modem connectors are different from straight through connectors because the receive and transmit conductors are crossed.

This is a miniature null modem with a male connector on one side and a female on the other.