A:Answer You can watch 4K media the following ways:
4K/UHD bluray player through HDMI
4K capable app (amazon,neflix,vudu,youtube) on an external device such as a 4K/UHD blurry player or an Xbox one S through HDMI
Cable service through 4K capable hardware like an HDFury through HDMI
Casting 4K from Netflix or Vudu, etc. (but NOT Amazon) from the include android tablet
Certain files types (MP4) will play from a USB stick, but there is not control interface with this method. Files will autoplay in order, no directories or control of the playback
From a computer over HDMI