The Gefen GTV-HDMI1.3-144 is a 1:4 Splitter for HDMI allows set-top boxes, DVD players and other HDTV devices to be connected to up to four HDTV displays. When two or more GefenTV HDMI 1:4 splitter units are connected together, they can be used to create a larger video signal distribution. This unit supports HDMI 1.3 features and passes the higher bandwidth HDMI 1.3 signal for the ultimate in state-of-the-art HDMI signal duplication. The Gefen 1:4 Splitter for HDMI 1.3 is connected using an HDMI cable from the HDMI source to the HDMI splitter input. There are four HDMI outputs. Each output is connected to an HDMI display. Power is cycled for all equipment, then all connected displays will show a crisp, clear replica of the source video signal. This HDMI product supports both audio and video signals.