Is HDMI 2.1 required for the Xbox Series X?
Although HDMI 2.1 is not required for the PS5 or Xbox Series X, it does enable advanced capabilities such as 4K at 12 frames per second, HDR, and low latency mode (ALLM). You may use a PS5 and Xbox Series X without HDMI 2.1 because it is fully compatible with HDMI 2.0 and other variants.