<p>The power supply method of the module: take power from the car insurance, this product does not need to be connected to the ACC power supply, just connect the battery power supply and the ground wire</p> <p>Module installation location: 6-disc CD of the co-pilot of the vehicle</p> <p>Brief introduction to the module installation process: The optical fiber conversion cable provided with the product is plugged in with the 6-disc CD optical fiber interface of the car, connected to the power supply of the product, and connected to the ground wire.</p> <p>Product name:for Audio Optical Decoder</p> <p>Fitment:</p> <p>For A8\/A8L 2004-2009 2GMMI systems</p> <p>For A6\/A6L 2005-2009 2GMMI system</p> <p>For 2005-2009 2GMMI system</p> <p>Note:This product is only suitable for 2G MMI system, the product only has one audio input function, no video input function</p> <p>Built-in Bluetooth module 5.0</p> <p>Module access voltage:12V</p> <p>Colour:Black</p> <p>Material:Metal+ABS</p> <p>Package Contents:</p> <p>1 * Audio Fiber Decoder Box</p> <p>1 * audio cable</p> <p>1 * power cable</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>