Perfect for situations where three HDMI devices must share a single HDMI input on a display, this HDMI auto switch provides for hassle free operation. The power required for operation of this switch is provided from the HDMI source devices, so no separate power adapter is required. With the wealth of devices now using HDMI, it is easy to run out of free HDMI inputs on a HDTV or home theater receiver. This HDMI selector switch solves the problem by providing additional high-definition digital inputs for sources including Blu-ray and DVD players, gaming systems, and high-definition cable/satellite boxes.