2 FUNCTIONS: BI-DIRECTIONAL HDMI SWITCH & SPLITTER: you can connect two HDMI sources to one screen / OR / connect 1 HDMI source on 2 screens (SINGLE MONITOR IS DISPLAYED AT A TIME, you choose the screen where s 'show image)HIGH RESOLUTION & HDCP "PASS-TROUGH": Supports 4k x 2k UltraHD 4Kx2K (4K @ 30HZ) resolution, Dull HD 1080P & 3D, HDCP Passthrough and HD audioFAST AND STABLE TRANSMISSION: This HDMI switch not only supports high bandwidth: 3.4Gbps, but also stable and high definition audio and video qualityUNIVERSAL COMPATIBILITY: Suitable for most devices with standard HDMI interface, Blu-Ray DVD player source, XBox 360, XBox One, XBox One X, PS3 / PS4, etc ... Output display: 4K TVs , Full HD, HD, monitors, projectors, PC screen etc.EASY TO USE, PLUGNPLAY: Just press the HDMI button to select signal or screen. Manual switching via one button, more stable and durable