aten 4 port hdmi switch 4 pc - 1 hdmi vs-481b 4k videohdmi switch 4 ->, 1vs481b 4 port hdmi switch lets you easily and quickly share your hdmi display unit (tv, projector, monitor) with up to 4 input signals (dvd, tv, blueray, satellite ...). the device allows you to switch to the desired signal psu using the remote control, the front panel button or the rs-232 port. support up to 4k resolution.allows you to connect up to 4 inputs per displaybutton, remote control via rs-232 port340 mhz bandwidth support, 4kx2k videohdmi (3d, deep color, 4kx2k) hdcp compatibleautomatic switch mode for automatic port selectionup to 15 m (24 awg)consumer electronics control (cec) supportdolby true hd and dts hd master audio supportbuilt-in rs-232 port for remote control of high-end systemsinstant switching for smooth transition between hdmi video psussupport ir signal extension with ir extension cable (not included)led display of individual port states