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Hi there, Suwan! Thank you for sharing your question to us about the LG TV (OLED42C5PUA). Yes — the HDMI ports on the OLED42C5PUA support HDMI 2.1, giving you access to features like higher bandwidth, 4K gaming enhancements, and variable refresh rate depending on your connected device. You can explore the full feature list and support details here: https://www.bestbuy.com/product/lg-42-class-c5-series-oled-evo-ai-4k-uhd-smart-webos-tv-2025/JJ8VPZTHLJ. If you need further assistance, please send us an email at lgdigitalcare@lg.sprinklrsupport.com. - Avril
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