Designed For Surface, The Sd4855P Usb-C 10Gbps Dual Video Driverless Docking Station - 100W Pd - Dp++/Hdmi (Dfs) Is The Top-Of-The-Line Usb-C Driverless Dock. It Features A Usb-C Port Supporting Displayport Alt Mode And Power Delivery. One Connection Expands Your Surface Laptop Into A Fully Powered Yet Streamlined Desktop Setup Supporting Up To Dual 4K Via A 13-In-1 Design Complete With 6 Usb-Ports.