Fake HDMI 2.1 is now a thing, HDMI licensing body doesn't care at all
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Amazon.com: Zeskit X-Tech 48Gbps Ultra High Speed HDMI Cable 1.5ft, 8K60 4K120 144Hz eARC HDR HDCP 2.2 2.3 Compatible with Dolby Vision Apple TV 4K Roku Sony LG Samsung Xbox Series X