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Hi there, Steve. Thank you for your inquiry about the LG 75QNED99TUA 8K QNED MiniLED TV. We understand that knowing the HDMI capabilities of your TV is important for optimal performance. The 75QNED99TUA features HDMI 2.1 ports, which support high-bandwidth features like 4K 120Hz and VRR (Variable Refresh Rate). Additionally, it also has eARC (Enhanced Audio Return Channel) available on HDMI port 2, allowing for high-quality audio passthrough for compatible sound systems. https://www.lg.com/us/tvs/lg-75qned99tua-qned-4k-tv#pdp_specs If you need further clarification or have any other questions, feel free to send us a private message on Social Media @LGUSSupport, and our team will be happy to assist you. We appreciate your interest in LG products! —Renzo
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