HD HDMI Switcher is a new generation of digital audio and video standard interface products, mainly used in the home theater market. HDMI synchronous transfer video and audio signals through a single cable, and provides content protection, based on a number of advantages. Supporting HDMI interface input source has become increasingly popular. However, most of the display device, such as HDTV plasma TV usually only have one HDMI input terminals. Users must constantly plug wire to connect the different products. HDMI switch up to five different HDMI input device connected to a single HDMI display device, and through the infrared remote control or front panel buttons to switch easily connected to a variety of digital devices, greatly enhance the ease of operation.