Lack HDMI ports on your TV? Tired of plugging/unplugging the cords to get an available HDMI port? This 3-port HDMI switch will be a good solution to get extra HDMI port for you easily. Key-Press-Switching Function If one device is active, it will detect and display it automatically.If there is more than one active device, the last connected device will display and you can also press the "select" button to choose the device you want to attach to. The LED light will turn on to show that is connecting to. NOTE: for Only Some Devices, the HDMI switch may not work(lose signal) when only one input device is power on due to insufficient power. In this case, please turn on two or all the three source devices to try. High Quality Made of gold-plated connectors and top-notch material, the switch will give you stable performance. No distortion of audio and video. Crystal Clear Video Resolution up to 2160P for high definition video, it is compatible with 480i, 480p, 576p, 720p, 1080i, 1080P. Specification: HDMI Switch three input one output. Supported Audio Formats: LPCM, DOLBY AC3, DTS7.1, Direct StreamDigital Supported Video: 24bits, 36bits Supported Resolution: 480i/480p/576p/720p/1080i/1080P/2160P Video Bandwidth: 3.4Gbps/340Mhz Operating Humidity Range: 10% to 85% RH Warranty: 30 days money-back and 12-month worry-free Guarantee! Package Included: 1* 3-Port HDMI Switch 1x User Manual