A:Answer Hi Tangledwolf, Thank you so much for your inquiry in our one of the best TV in the market, X900H Full Array LED 4K Ultra HD Android TV! There is much confusion about the HDMI versions and concerns about compatibility. For this reason, we do not promote the HDMI versions incorporated on many of our products. Instead, we advertise the features of a product that are associated with a particular HDMI version. For X900H, yes, the TV will support up to 48 Gbps transfer rate to support 4K120, Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM), and Enhanced Audio Return Channel (eARC) via a future firmware update. I hope this helps! Thanks again for considering Sony! - Romeo