Apples support site says the early 2016 MacBook supports 4K @ 60hz over HDMI with a compatible adapter. The question is, which adapter supports this? I have been looking for days, can't seem to find anything that claims 60hz output at that resolution AND allows charging at the same time. I figured maybe just get a USB-C hub and an individual adapter, but I can't find USB-C hubs that give you more than a single USB-C port to use for charging. Anyone have a solution?