Per Microsoft’s official website. Bring more power to your laptop. Surface Dock 2 transforms your Surface into a desktop PC with a 199W power supply to charge most Surface devices, plus USB-C®¹ ports that support dual 4K monitors at 60Hz. Simply plug in the Surface Connect cable to charge your device and access external monitors, a keyboard, mouse, and more. Surface Book 3 (13.5 and 15) Surface Pro 7 Surface Pro X Surface Laptop 3 (13.5 and 15). Supports dual 4K monitors at 30Hz. Surface Go 2 Surface Pro 6 Surface Pro (5th Gen) Surface Laptop 2 Surface Laptop (1st Gen) Surface Go Surface Book 2 (13.5 and 15). Surface …..