This Delock HDMI repeater can be used for signal enhancement of your HDMI connection up to 30 m. Thereby you can plug in an up to 20 m long cable from your PC or laptop to the input port of the repeater. On the other side you can plug in an up to 10 m long cable to the output port of the repeater which will be connected to your display or TV. The repeater supports a resolution up to Ultra HD (4K) and is backward compatible to Full-HD 1080p.