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Hi Mikemiller, thank you for inquiring about the X900H. Yes, the TV supports HDMI 2.1 in HDMI 3 and 4 port. I hope this helps. Regards, Erin
Sorry, there was a problem. Please try again later.I'm not an expert, but I'll say "NO". This TV supports "HDMI ARC" (1 input only) which I believe is HDMI 1.4, I understand HDMI 2.1 should be "HDMI eARC".
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