DE-9

A D-shaped connector with two rows totaling 9 pins. The top row has 5 pins, and the bottom row has 4 pins.

Two types of DB-9 connectors exist. A male DB-9 connector has pins, while a female DB-9 connector has holes. You can only plug a male connector into a female plug or vice versa, unless you have a DB-9 gender changer.

This is a male DB-9 connector: File:Http://database.ssonicnet.com/images/DB-9m.png

This is a female DB-9 connector File:Http://database.ssonicnet.com/images/DB-9f2.png