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HDMI 2 and HDMI 4 on the LG NanoCell 90 Series 2020 55 inch Class 4K Smart UHD NanoCell TV w/ AI ThinQ® (54.6'' Diag), Model # 55NANO90UNA are HDMI 2.1 ports and they all support higher frame rates, VRR (Variable Refresh Rate), ALLM (Auto Low Latency Mode) and HDMI 3 supports eARC (Enhanced Audio Return Channel). The ports also support the HGiG Profile for gaming and will receive a firmware update that adds support for FreeSync™ ...^IFV
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