The DE-9 (9 pin D-shell connector) is a type of D-subminiature electrical connector most commonly used for the RS 232 port on the IBM AT and compatible computers.

Connector

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DB-9 is a common misnomer for the DE-9. A true DB-9 connector would have 9 pins in a connector the shape and size of a DB-25.

Applications

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The DE-9 connector has found a use in many different applications, ranging from video display to video game controllers. Listed below are some of the uses found for this connector.

Video

• Monochrome Display Adapter
• Color Graphics Adapter
• Enhanced Graphics Adapter

Computing

• RS-232 communication
• MSX mouse and joystick
• Apple II mouse and joystick
• Amiga and Atari mouse and joystick

Game Consoles

• Atari 2600
• Atari 7800
• Sega Master System
• Sega Genesis
• Amiga CD32

See also

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• Serial Programming:RS-232 Technical Manual
• RJ45
• MMJ

External links

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• D-Subminiature Nomenclature

Electrical signal connectors | Audiovisual connectors