The st122hd4ku 2 port video splitter supports ultra hd 4k ensuring astonishing picture quality four times the resolution of high definition 1080p while sharing a 4k hdmi video source between two hdmi displays the 4k splitter is backward compatible with previous hdmi revisions supporting 1080p 720p hdmi video resolution devices such as computers blu ray players and cable tv set top boxes even if you don39t require 4k video today the video splitter ensures you39ll be ready to take advantage