I asked the question on Facebook as well and my answers were the ports are "disabled" I am not sure what they mean, (Can't get behind the tv, can't sort out of to change input) but I am going to give it a ago.
We are sailing on the Discovery soon and I was hoping to bring my Surface and docking station so we could watch shows I have downloaded. Has anyone been successful hooking up an HDMI device and it work correctly? Thanks