Share and switch four distinct HDMI audio/video sources between four HDMI displays with optional Picture-and-Picture - Compatible with HDMI enabled video source devices such as computer systems and Blu-ray players & HDMI enabled video display devices such as televisions monitors and projectors - HDMI Switch / HDMI Matrix Switch / HDMI Switcher / 4 way HDMI Splitter / HDMI Matrix with Picture and Picture / HDMI Matrix - Output a video input to four displays in a video wall setup