I have the Surface Pro 3 i7 512K. I am connecting to a Samsung U28D590D 4K monitor via a display port cable. The maximum resolution it allows me is 2560 x 1440. My understanding is that it should be able to use the full 4K resolution of 3840 x 2160. I have restarted and done the Windows update. I have also tried plugging the display port cable directly into the tablet, and into the docking station. Nothing has worked. So how do I get this working?