Use the Marmitek Connect 310 UHD 3-port HDMI switch to easily connect 3 devices to your television with 1 HDMI cable. Useful when your TV doesn't have enough HDMI ports. This HDMI switch automatically switches to the active video source. When two sources are switched on at the same time, you can use the remote to switch channels. The switch is suitable for Ultra HD images, so you can effortlessly connect the device to your 4K TV. This switch can be used without power adapter.