“Do I need to buy 4K hdmi cables or will the regular hdmi cables work work with this tv?”
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All High-Speed HDMI cables will carry a 4K video signal. If you bought your HDMI cables after 2009, your 4K content should reach the LG 55 Inch Class 4K HDR Smart LED TV (54.6'' Diag), Model # 55UM6910PUC. If you want your HDMI cables to support 4K resolution, you need to make sure that they are High-Speed HDMI cables. They are tested to transmit video resolutions from 1080p to 4K with a richer color palette. With or without HDR, you need High-Speed HDMI cables. There is a Premium certification as well, but it is completely optional...^IFV
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