The HDMI switcher allow you to connect two HDMI source to one HDMI display or connect one HDMI source to toggle between two displays. It support 4K*2K@60Hz, 3D, 1080P resolution, provide you with transfer rates up to 18 Gbps and backward compatible with all previous HDMI standards. No external power required. The HDMI selector box is easy to setup and operate. Simply press the button to swap signal within one second and the indicator lights show the working status. HDMI switcher 2 ports compatible with all devices with standard HDMI interface. Input source: laptops, PCs, XBox 360, PS3/PS4, Blu-Ray DVD player, TV box, etc. Output source: HD monitor, TVs, projectors, displays, etc.