This is the Mercedes iPod kit for the new Mercedes C class (W204) including GLK, E Class (W212) and E Class Coupe (W207) with any Mercedes audio system installed.
This is NOT suitable for NTG4.5 cars - i.e. cars WITH USB ports in the armrest glovebox.
It is therefore suitable for all W204 C class before the MY2012 facelift, all Audio-20 without the NAVI button, and COMAND units with a PCMCIA slot (but not a SD card slot)