Is HDMI 2.1 port backwards compatible?
Version HDMI 2.1a of the HDMI Specification is backward compatible with earlier versions of the Specification and is available to all HDMI 2.0 Adopters. Does HDMI 2.1 work with older HDMI? Is HDMI 2.1 backward compatible? Yes. You will be able to connect any HDMI-enabled device supporting any older version of the HDMI standard, and it will work just fine …