EX1 AMI Audi Music Interface MDI Volkswagen Media Device Inteface MMI to 3.5mm Aux and Micro USB Adapter for Audi and Volkswagen Listen the music files in your smartphone or other electronic device via the Audi Music Interface (AMI) / Volkswagen Media Device Interface (MDI). Connect your smartphone / electronic device with 3.5mm connector. The micro usb adapter is for charging your smartphone. This cable is for music transmission only, phone call is not supported. You have to activate the AUX mode in the MMI system in order to use this product. Please note that you can only change songs from the smartphone, no control over music from the MMI system. The playlist will not be displayed on the screen. Compatible with MDI, MMI 2G/3G/3G+.