The Caliber 3D4K-3P allows you to send the HDMI signal of 3 devices to 1 HDMI input. Useful if your TV doesn't have enough HDMI ports for all the devices you want to connect. Connect a Blu-ray player, console, and an external decoder, without having to switch the cables. The switch supports 3D and 4K signals. The included remote allows you to switch between all ports. The sturdy metal casing has LED lights that show what input you have to use.