Mercedes Media Interface Plus (or MIP) is an add-on available from Mercedes for vehicles equipped with the iPod / MP3 Media Interface (factory option code 518). It allows you to connect your Bluetooth enabled phone to the car's mbrace infotainment system, allowing you to download your phonebook and stream audio. On most Mercedes vehicles you can connect your iPhone or iPad to the MIP via USB to play video over the car's screen. Depending on the phone you may be able to control the system using the buttons on the central controller or steering wheel. The USB ports supply 5V and can also be used to charge your phone.