The 2 x 4 HDMI switch splitter can connect 2 hd signal sources to 4 hd display terminals.It can easily split the 2 hd signals generated by the 2 hd signal sources to 4 hd displayers or projectors.In addition, when connect it to a HDMI output cable, it can amplify the HDMI singal. The 2 signal sources can be switched freely.The HDMI splitter can support all hd multichannel audio formats including 720p, 1080i, 1080p,2160p. It also supports the 3.5 mm headphones audio output and SPDIF audio output.