We recently got a new SonyXBR 850B TV and it is a so-called " smart tv " with wireless wi-fi built in and a lot of apps. Under the Input section there is something called Mirroring. Reading the instructions it appears it would need something called Miracast to put something from this Surface Pro ( original ) on screen of the TV. Is that software or hardware? Has anyone used it with the Surface Pro 1? Has anyone mirrored a Surface to one of these 4K TV's?