Buyer's Point 8K Ultra High Speed HDMI 2.1 Cable (6ft) with 120Hz & 48Gbps, compatible with Apple TV, Nintendo Switch, Roku, Xbox, PS5, PS4, Projector, HDTV, Bluray (Black) - Walmart.com
Turns out that “HDMI 2.1” ports don't need to actually support HDMI 2.1 features | Ars Technica
When HDMI 2.1 Isn't HDMI 2.1 - The Confusing World of the Standard, "Fake HDMI 2.1" and Likely Future Abuse - TFTCentral
HDMI 2.1 arrives with 10K support, making your 4K TV obsolete
Don't Buy an HDMI 2.1 TV Before You Read the Fine Print
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TV brands claim HDMI 2.1 features – some lie!
X900h, which port is HDMI 2.1? : r/bravia
Amazon.com: OneConvey 8K HDMI Cable (HDMI 2.1) 3.2Feet -Ultra High Speed HDMI Cable 48Gbps Optimal Viewing for Apple TV and Apple TV 4K Xbox PS4 4K Dolby Vision HDR10 Ethernet/ARC Dolby Atmos :
What Are HDMI 2.1 ARC and eARC Cables? - Dolby - Dolby