The is the optional iPod Adapter Cable for the XCarLink USB MP3 Player/AUX Integration Kit (XCLu-MAZ). This cable is not compatible with any other XCarLink units and features the older 30-pin iPod dock connector, NOT the new, smaller Lightning plug. However, it will work with newer devices if you also have the Apple Lightning Adapter.

Picture is currently not accurate, as the plug on the XCarLink side is different.