1、Part Number: The replacing part number is 4F0 051 510 E or 4F0 051 510L for reference to assist you easily find exactly what you need. 2、Perfect Fitment: Replacement for A8 S8 A8‑L 2009 onwards, replacement for Allroad 2009 onwards, replacement for Mk5 and so on. 3、Applicable Format: The AMI to USB cable supports many formats such as MP3 audio format, WMA, WAV format and other quality audio formats. 4、Car Speaker Play: Pair your device with bluetooth module, and choose Aux from your radio, then you can play music through car speakers by controlling your device. 5、Excellent Performance: Design with plug and play type according to the original specification, bring a funny experience to enjoy music from your phone when driving.