The present document is part of the MirrorLink? specification which specifies an interface for enabling remote user interaction of a mobile device via another device. The present document is written having a vehicle head-unit to interact with the mobile device in mind@ but it will similarly apply for other devices@ which provide a colour display@ audio input/output and user input mechanisms. The present document describes the High-Speed Media Link@ a video transmission mechanism that utilizes the USB to project the screen of one device onto another device with a larger screen.