"2The 2 x 4 HDMI switch splitter can connect 2 hd signal source to 4 hd display terminal.It can easily split the 2 hd signal generated by the 2 hd signal source to 4 hd displayers or projectors。In addition, when connect it to a HDMI output cable HDMI splitter can support all hd multichannel audio formats including 720p, 1080i, 1080p. It also supports the 3.5 mm headphones audio output and SPDIF audio output. "