Connector: Stereo 3.5 mm Jack to DB9 Female Serial Port. Fully shielded to prevent unwanted /RFI interference. Generic Serial Transfer Cable For Devices,Primarily used to transfer Serial Data back and forth from Small devices. The Velocity -232 adapter leverages your DB9 or 3.5mm stereo audio cable to run 3-conductor -232 control signals between your control unit and your video display. Fully molded DB9 and 3.5mm connectors provide excellent strain relief. This adapter is for use with computers, projectors, and any control unit/display requiring 3-conductor -232 serial control. Wiring Schematic: DB9 TRS Connector 3.5mm Pin 1-6-7-8 Pin 2 Tip - Left Pin 3 Ring - Right Pin 4 Pin 5 Shield - Ground Pin 9 Cable Length: 6 feet Color: Black Material: plastic Package Contents: 5 x Audio/Video Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.