The VS440HDMI 4x4 HDMI(R) Audio/Video Matrix Switch/Splitter (with Audio and RS232) lets you share up to 4 distinct HDMI or DVI inputs (using HDMI to DVI adapters - not included), with audio, between 4 independent displays or projectors. Providing convenient front push-button and RS232 PC software control, this matrix switch allows each input and the corresponding audio to be switched individually, meaning that different A/V sources can be shown on each output, or a single source can be output to several offering maximum flexibility. The switcher features a front panel LCD display for easy status monitoring, plus an included remote control and IR extender module for simple control from a distance. Designed to provide maximum functionality while saving space, the HDMI Video Matrix Switch can be used as a standalone solution or rack-mounted using ear-mounts (included). Backed by a Star Tech. com 2-year warranty and free lifetime technical support. The Star Tech. com Advantage ?Matrix switching functionality gives you full control of the video source displayed on each monitor, at the touch of a button ?Front panel push-buttons, RS-232 PC port and IR remote included for simple control and flexible switching options ?Storage of display configurations allow for convenient recall of preferred combinations