Upgrade kit for connecting audio sources to the original Audi car radio: Navigation Low - BNS 5.0 Radio Chorus 3 Radio Concert 3 Radio Symphony 3 Not suitable for Audi RNS-E Connection of an audio source (jack): MP3 player Portable DVD player MiniDisk player Laptop iPhone, iPod Socket dimensions: 2.7 cm x 2.7 cm (external dimension) AUX - 3.5 mm jack socket Scope of delivery: AUX IN socket Cable set