"Most newer TVs come with three or four HDMI ports, and on the surface, they all look identical. They all have the same shape and work with the same HDMI cable, but not every port supports the same features. Choosing the wrong one can leave your PS5 stuck at 60Hz, your soundbar silent, or your PC unable to output at a high refresh rate."
"For example, an HDMI 2.0 port supports 4K at 60Hz, HDR, and ARC audio, making it good for streaming media players and cable boxes. Meanwhile, an HDMI 2.1 port supports 4K at 120Hz (or 8K at 60Hz), VRR, ALLM, and eARC, which is great for next-generation consoles like the PS5. HDMI 2.1 can sometimes reach 4K at 240Hz with Display Stream Compression (DSC)."
Most modern TVs include multiple HDMI ports that look identical but provide different bandwidth and feature capabilities. All HDMI ports can carry video and audio, but lower-bandwidth ports may limit resolution, refresh rate, and advanced features. HDMI 2.0 supports 4K at 60Hz, HDR, and ARC audio, making it suitable for streaming devices and cable boxes. HDMI 2.1 supports 4K at 120Hz (8K at 60Hz), VRR, ALLM, and eARC, and can sometimes reach 4K at 240Hz with DSC, benefiting next-generation consoles and high-refresh PCs. ARC/eARC ports return audio to soundbars or AV receivers; eARC supports uncompressed Dolby Atmos and DTS:X. Plugging into the wrong port will still work but can reduce performance or audio capability.
Read at ZDNET
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