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You can review the support page at lg.com and review the User's guide for information on 120 Hz and the HDR effects. LG does not publish information related to version of HDMI ports on newer TVs because it is a fluid situation. You can confirm on other sites, however such as https://www.displayspecifications.com/en/model/bf771f04. If you have questions or further concerns, please reach out to our support team on Twitter via @LGUSSupport or on Facebook at https://www.facebook.com/LGUSA/. ^Daphane
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