DVDO HDMIAOCPL1 Plenum Rated 4K HDMI 2.0 AOC Fiber Cable

Past about 15 m, passive copper HDMI stops being reliable at 4K. This is an active optical cable: hybrid OM3 fibre carries the video while copper handles the low-speed lines, so the run holds 4K60 in YUV 4:4:4 across the full 18 Gbps without an external power supply, an inline booster, or the signal loss and interference that come with long copper.

The jacket is CMP plenum rated, which is what lets it go into an air-handling space without conduit. It is 4.5 mm across and flexible enough to route through a tight path, with gold plated connectors and a connector pull strength of up to 19 kg. EDID, CEC, ARC, HDR and 3D all pass through, and EMI and RFI pickup are reduced by the fibre core. Order the run length you need rather than coiling slack behind a display.