OBD adapter for final coding when installing a DVD player at a later date Suitable for the following vehicles: Audi A6 4A (up to model year 2020) Audi A7 4K (up to model year 2020) Audi A8 4N (up to model year 2020) Audi Q8 4M (up to model year 2020) Simply connect the adapter to the vehicle's OBD interface - done! The interface takes care of all necessary codings independently Scope of delivery: 1 coding dongle Note: This coding adapter can only be used for one vehicle