HDMI 2.1
48 Gbps HDMI — 4K@120Hz, 8K@60Hz, VRR, ALLM.
HDMI 2.1 raised the link bandwidth from 18 to 48 Gbps, enabling 4K at 120 Hz with HDR, 8K at 60 Hz, Variable Refresh Rate, Auto Low Latency Mode (ALLM), and Quick Frame Transport. Required for full PS5 / Xbox Series X / RTX 40+ feature support over a single cable.