HDMI 2.1 cables don’t work with HDMI 2.0 TVs and nobody warned you

You’ve got a shiny new HDMI 2.1 cable. It’s rated for 48Gbps, boasting 4K at 120Hz and all the buzzwords that can future-proof your home entertainment. You plugged it into your TV, and nothing changed. You don’t experience 120Hz or any extra sharpness. And you wonder why you’ve spent extra money on a better cable.

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