Review on 🔌 Zeskit Lite 48Gbps Slim Certified HDMI Cable 5ft | 4K120 8K60 144Hz eARC HDR | Dolby Vision Compatible | Apple TV 4K, Roku, Sony, LG, Samsung, Xbox Series X, RTX 3080, PS4, PS5 by Steven Saric

Yes, they have the HDMI.org hologram. Yes, mine has to be authentic via the app, but think about it. How can I know for sure? That is the question. As others have said, the released HDMI.org documentation says Ultra should be stamped on the cable jacket. I have no embossing (photo follows). So I think that at some point the manufacturer was "HDMI.org certified" with the marked cable. Now that times are tough (COVID and such), they just use standard cables and put a "CERT” sticker on the cable. Box. And one last note, I also bought a Zeskit Maya 8K braided cable. I know the braid adds stiffness but wow. I believe these cables have a solid copper core (not twisted pair). lie limp like any other typical HDMI twisted pair, so I doubt they're really robust and 48Gbps happens.