Audio optical decoder Module access voltage: 12V Module power supply power way: the car insurance at the power, this product does not need to connect ACC power, only need to connect the battery power, connect the ground Module installation location: the vehicle passenger 6 disc CD at Module installation process introduction: the product with the fiber optic conversion cable and the car's 6-disc CD fiber optic interface plugged in, connected to the product power supply, connected to the ground. Applicable to. For 04-09 A8/A8L 2GMMI system For 05-09 A6/A6L 2GMMI system For 05-09 2GMMI system Caution. This product is only applicable to 2G MMI system, the product only has one audio input function, no video input function Color: black Material: plastic Package Contents: 1 x Audio Optical Decoder 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.