This HDMI Switcher/Splitter 4x28 can connect 4 HD signal sources with 28 HD display terminals. It can easily split 4-way HD signal sources to 28 HDTVs or projector. It also can amplify the HDMI signal. The 4 input HD signal sources can be switched freely. The HDMI Switch/Splitter 4x28 can support highest video resolution 3840x2160@30Hz.