1Easy To Use: This HD Multimedia Interface splitter is a high definition audio and video splitter that allows one HD Multimedia Interface input port to distribute four HD Multimedia Interface output ports by connecting the HD Multimedia Interface signal source to the input of the splitter with an HD Multimedia Interface cable (which needs to be purchased separately, and the length does not exceed the transmission distance). 2Applicability: It can make the HD Multimedia Interface signals of set top boxes, DVD players, D VHS players and other HDTV devices distributed into four consistent and synchronized HD Multimedia Interface signal outputs. 3Applicability: Users can connect the output signals to HD projectors, DLP, LCD HDTVs and other HD display devices at the same time. 41 Input 4 Output: The HD Multimedia Interface splitter can easily copy or mirror 1 HD Multimedia Interface source to 4 displays at the same time. 5Plug and Play: The HD Multimedia Interface splitter is plug and play and requires no drivers.