Just click your Surface Pro 3 into the dock & go from tablet to full desktop PC in an instant. With an Ethernet port, Mini Display Port, & five USB (Universal Serial Bus) ports (three USB (Universal Serial Bus) 3.0, two USB (Universal Serial Bus) 2.0) you can easily connect an HD monitor, wired network connection, audio system, full-size keyboard, mouse, printer, & more. Extend your display to a larger screen. The mini Display Port connection delivers high-definition video resolution of up to 3840 x 2600 DPI.