WIDE COMPATIBILITY: Suitable for Apple TV, PS3, PS4, TV-Box, ROKU 4, Apple TV, Blue-Ray / DVD player, Amazon Stick and other devices with an HDMI connection. 3 PORT: 3 HDMI ports for input and 1 HDMI port for output. Solve the problem of lack of ports to connect more devices. AUTO DISPLAY and MANUAL SWITCH: When a device is active, it is automatically recognized and displayed. If you want to switch to a different device, there is a "Select" button that you can use to switch easily. UHD RESOLUTION: Resolution up to 4K for super clear video, support for 3D movies. 480i, 480p, 576p, 720p, 1080i, 1080p available. Audio formats: LPCM, DOLBY AC3, DTS7.1, Direct Stream Digital. No audio or video distortion, no delay in signal transmission. PLUG and PLAY: No additional energy required. Cable length: 50 cm. Overview: No distortion of audio and video. Auto display and manual switch. No extra power needed and no installation required. Resolution up to 4K, also support 480i, 480p, 576p, 720p, 1080i, 1080P. Packing List: 1 * 3-port HDMI switch 1 * Instruction Manual Specification: 3 HDMI input ports; 1 HDMI output port Supported Audio Formats: LPCM, DOLBY AC3, DTS7.1, Direct Stream Digital Supported Video: 24bits, 36bits Supported Resolution: 480i, 480p, 576p, 720p, 1080i, 1080P, 4K Video Bandwidth: 10.2GB / s or 340 MHz Operating Humidity Range: -15 to 55 Cable Length: 50cm (19.7inches)