Who wants to use his Surface Pro3 to replace a laptop is well advised with the docking station. Thus, a connection of external devices such as a DVD drive or hard drives is possible without any problems because the power is transferred through the dock. Stay charged and cleared the Surface Pro 3 for the next use is available. Also, the insertion into the docking station is easy in my opinion. There is also a Mini DisplayPort to HDMI DVI VGA display adapter for about 25 All in all ... for me a useful accessory.