Startechcom hdmi splitters startechcom st122hd4k this 2 port 4k hdmi splitter from startechcom enables you to share two hdmi displays or projectors with an hdmi enabled audiovideo source device such as a computer blu ray player or cable tv set top boxwith support for ultra hd 4k the hdmi splitter ensures astonishing picture quality four times the resolution of high definition 1080p at 30hz the 4k splitter is also backward compatible with previous hdmi revisions supporting 1080p720