I bought a whole bunch of ridiculous HDMI cables due to frustration of lack of HDMI 2.1 cable availability in South Africa and bought from all over and only one was able to output 2160p @120hz 4:4:4 10bit on LG C9. Was soo angry, as importing cost me soo much(hundreds of dollars), but just wanted to avoid being scammed-only to be scammed.
I even contacted HDMI.org to verify these cable, and they were not helpful…
I did notice improved colour quality with Fibre Optic HDMI cables, but did not do 4K120 as advertised.
These are the SNAKE OIL cables I purchased and have, and I linked both manufacturer website and Stores bought from:
Vention HDMI Cable 8K - Bought On AliExpress - Did not do 4K120 - 3m
Vention Optical Fiber HDMI Cable 8K - Bought On AliExpress - Did not do 4K120 - 3m, 5m & 20m
MOSHOU HDMI 2.1 - Bought from AliExpress , eBay, Sikaicase & Amazon - Did not do 4K120 - 3m & 5m
MOSHOU HDMI 2.1 Blue - Bought from AliExpress - Did not do 4K120 - 3m & 5m
MOSHOU Optical Fibre HDMI 2.1 - Bought on Sikaicase, Ebay & Amazon - Did not do 4K120 - 3m, 5m &10m
After a review from Vincent Teoh on HDTVTest about the Zeskit HDMI 2.1 cable, I bought the 3m & 5m and they worked perfectly and can be scanned with HDMI certification app.
Zeskit Maya HDMI 2.1 - Bought from Amazon – Worked with 4K120 - 3m & 5m
Please may you also test the TrueHQ & Maxonar 48gbps Ultra High Speed Cables in 3m & 5m.