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When HDMI 2.1 Isn't HDMI 2.1 - The Confusing World of the Standard, Fake HDMI 2.1 and Likely Future Abuse - TFTCentral : r/hardware

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Cable Matters 48Gbps USB C to HDMI Adapter Cable 6 ft, Support 4K 120Hz and 8K 60Hz HDR - Thunderbolt 3 and Thunderbolt 4 Port Compatible - Max

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You don't need new HDMI cables for Dolby Vision HDR - CNET

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Fake HDMI 2.1 is now a thing, HDMI licensing body doesn't care at all

iBirdie 8K Fiber Optic HDMI 2.1 Cable 32 Feet 8K60hz 4K120hz 4K144hz HDCP 2.3 2.2 48Gbps Ultra High Speed Compatible with Apple-TV Dolby Vision Atmos PS5 PS4, Xbox One Series X

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