Docking Station for Surface Book and Surface Pro 3/4. Ports: 2 Mini DisplayPort, 1 Gigabit Ethernet, 4 USB 3.0, 1 Audio out. Includes Surface Connect cable and External power supply. 5.12 x 2.36 x 1.18 in (130 x 60 x 30 mm), 1.21 lbs. (550g). Surface Dock. Ample power for your Surface and attached accessories. Lightning-fast Surface Connect cable and Gigabit Ethernet port. Plenty of USB ports for all of your favorite accessories. Audio out port for your favorite speakers or headphones.