The 3x1 HDMI Switcher routes high definition video (in multiple resolutions up to 1080p) and digital audio from any one of the several sources to a display unit. The unit allows you to connect up to three devices with HDMI ports to a HDMI port on a TV. For example you can connect a Sky box, Blu-ray player and a PS3 to your TV. The unit will switch automatically to the device turned on or you can switch manually with the select button.HDMI is the new standard for digital video and digital audio transmission supporting standard, enhanced and high definition video and transmitting multi-channel digital audio along side the video signals. HDMI is designed for use with all HDTV standards and supports 8 channel digital audio.Supports 12-bit deep colour, full 1080pIntelligent or manual switchingSupports HMDI 1.3bHigh performance up to 2.5GbpsMaintains high resolution video HDTV up to 1080p 2k, 1440p graphics and computer resolutions up to 1920 x 1200No power neededConnectors: 1 HDMI output to 3 HDMI inputsGold Plated for better qualityBroadcast quality digital video, digital audio, and intercomponent control signals all in one compact, high-performance connectionSupports uncompressed audio/video signalsFully HDCP compliant to Provide highest level of signal qualityCertified to perform at standards set by HDMISupports 480i, 480p, 720p, 1080i, 1080p