A:Answer Hi there! Thank you for considering this TV. Because HDMI 2.1 is a complicated spec, we hope that focusing on TV features will be more helpful to you when deciding on the best model for your usage scenario. The QN85A has 4 HDMI ports, all of which support Auto Low Latency Mode (ALLM), Dynamic Metadata (HDR10+), and Variable Refresh Rate (VRR). High Frame Rate (HFR) 4K@120Hz is supported in “HDMI In 4”. The “HDMI In 3” port further supports eARC. ^Gina
