Gefen's 2x4 HDMI Switcher is equipped with two HDMI inputs and four HDMI outputs. Two inputs accommodate the simultaneous connection of up to two high definition video sources, such as satellite systems and HD DVD players. four outputs send the high definition audio/video signals to up to four high definition displays. Switching is done via the IR remote that is provided with the unit. Fully HDCP Compliant. HDCP (high bandwidth digital content protection) is a standard encoded into the video signal to prevent it from being pirated. If a source device is HDCP coded and is connected to a display or projector without the proper decoding mechanism, the picture is relegated to inchsnowinch or in some cases, very low (480P) resolutions of the images. In order to see high resolution digital video with HDCP compliance, both the source, the display and anything in between must be equipped with HDMI connections that can enable HDCP decoding, such as the 2x4 HDMI Switcher.You simply connect all your sources to the Switcher's inputs. Then connect up to four displays on the output ports. Once the sources, the Switcher and the display(s) are powered and connected, you simply select which source you want to view using the IR remote. This HDMI product supports both audio and video signals.