The AC-EX70-UHD-BKT is the basic 4K extender kit from AVPro Edge. You are able to pass 1080p HDMI signals 70 meters and 4K HDMI signal 40 meters all over readily available CAT-6a cable using HDBaseT technology. This product is the ideal solutions when you need a stable 4K HDMI signal distributed long distances. It solves problems for both commercial and residential markets for distributing high value 4K UHD content from rack to display. ? This is the basic extender kit from AVPro Edge, it?s has limited HDR and Dolby support. If you are wanting an extender that handles these more advanced signals, please look into the ?444? line of extender products, or our top selling extender the?AC-EX70-UHD-KIT.