Transform your surface into a desktop pc by plugging in your dock with the surfaceconnecttm cable with two high definition video ports a gigabit ethernet port four usb 30 ports and an audio output you have all the connections you need features 2 usb 30 ports 2 usb 20 ports gigabit ethernet port 35mm audio inputoutput connection mini displayport video output security lock slot storage for surface pen specification connections 2 x mimn display 1 x ethernet 4 x u