
The USB standardization committee has created layers of naming confusion. Horrible. Now I find out that that is the case for HDMI too. See <https://tftcentral.co.uk/articles/when-hdmi-2-1-isnt-hdmi-2-1> HDMI 2.0 no longer exists, and devices should not claim compliance to v2.0 as it is not referenced any more The features of HDMI 2.0 are now a sub-set of 2.1 All the new capabilities and features associated with HDMI 2.1 are optional (this includes FRL, the higher bandwidths, VRR, ALLM and everything else) If a device claims compliance to 2.1 then they need to also state which features the device supports so there is “no confusion” (hmmmm) Here's a list of the interesting new stuff in HDMI 2.1: Support for much higher bandwidths than older generations, allowing Support for higher resolutions – including 4K and even up to 8K Support for the combination of 4K and 120Hz high refresh rate (including at 10-bit, HDR and without colour compression) Variable Refresh Rate (VRR) support ALLM (Auto Low Latency Mode) support