New factory sealed. Microsoft Surface Docking Station 1661. Please note: Does not come with AC Adapter. Turn your ultraportable Surface into a desktop PC and boost your productivity with Surface Dock. Compatible with Surface Pro 3, Surface Pro 4, Surface Pro, Surface Laptop and Surface Book. Instantly transform your Surface into a desktop PC. Plug in the Surface Connect cable to charge your device and access external monitors, keyboard, mouse, and more. Find the perfect viewing angle, or position your device to take advantage of the robust pen capabilities. With two high-definition video ports, a Gigabit Ethernet port, four high-speed USB 3.0 ports, and an audio output, you’ve got all the connections you need in a sleek, compact design. Surface Dock uses Surface Connect technology which enables high-speed transfer of video, audio and data over a single cable, keeping your desk clutter-free. It also has a Gigabit Ethernet port giving you a fast, reliable connection to your network.