The Gefen Booster for HDMI with EDID Detective extends HDMI up to 150' at 1080p full HD and up to 115' at 4K x 2K ultra HD resolution, using standard copper HDMI cables. HDTV and Ultra HD displays use EDID (Extended Display Identification Data) to ensure that a connected Hi-Def source sends compatible audio and video signals. In some scenarios, this data can be lost, resulting in an incorrect signal or complete loss of audio and/or video. With DDC re-clocking technology, the reliability of HDCP handshaking is improved, ensuring that the Hi-Def source always receives the correct EDID. The booster-detective has been designed for quick and easy programming and installation.