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All four ports on the LG NanoCell 90 Series 4K 55 inch Class Smart UHD NanoCell TV w/ AI ThinQ® (54.6'' Diag), Model # 55SM9000PUA are HDMI 2.1 ports. The ports support HDMI 2.1 VRR (Variable Refresh Rate) ALLM (Auto Low Latency Mode), and HDMI 2 on the TV is an HDMI eARC port. Unlike its 2020 counterpart, it will not be receiving a firmware upgrade that adds support for HGiG (HDR Gaming Interest Group) or AMD FreeSync™ Premium...^IFV
Sorry, there was a problem. Please try again later.it does support VRR but not Freesync Premium
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