8K HDMI Cable 2.1 Long 15FT/5M, HD Ultra 48Gbps High Speed HDMI Braided Cord, 8K60Hz 4K120Hz 144Hz, HDCP 2.2&2.3, HDR10 Compatible with Samsung Fire Roku Apple TV 4K PS4 PS5 Xbox Series X

Works amazing no issues with connectivity even with it being such a long cable. Very thin cable but still feels sturdy. Video and sound worked perfectly on the first try easy to use. Definitely worth every penny.

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I got these cause last ones were not clearly certified for HDMI 2.1 and are questionable. These are very long and quality cable. It is clearly certified for Ultra High Speed (HDMI2.1) and so far from my test they work well for 120hz TV and game console with HDR. The wire are bit like rigid copper in a good way, you can bend and shape them a bit so they can retain their shape specific for the space you like them to be in, not like typical soft loose cable. But that also means if you have a TV that goes in and out from TV mount, and as you move the mount, the cables will move with it, they are going to rub against the surrounding in a more rigid way compare to normal softer cable. Not a bad thing just be aware of this.

Works exactly as advertised. Supports CEC bidirectionally - I can turn equipment on/off with Hisense TV( display) or Yamaha receiver (source). If anyone is having CEC issues, I suspect the issue is specific to the connected equipment. My guess is that some equipment does not allow the HDMI input port to provide power while the unit is off. If so, an incoming optical signal has no power to covert back to an HDMI signal. (There is another brand of optical cable on Amazon that provides/uses USB power supplies to power the source and/or destination connector electronics.) I have not tested eARC. The only concern I have is that the cable does not come on a spool and is easily tangled when trying to unwind. The user must be careful not to seriously bend/twist/knot the fiber which might result in an optical break.