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All 3 of the HDMI ports are 4K and all support the deep color setting; which enhances the picture qualit as long as you have a device plugged into the port that supports deep color. If you have a soundbar plugged into the optical port, anything plugged into the tv will utilize the optical port and you’ll have sound. If I’m remembering correctly the only HDMI ARC port is utilized if you have an external sound device that only uses HDMI connection and you need to connect it to your tv, you will have to use that specific port to have sound.
Sorry, there was a problem. Please try again later.The 65SK8000PUA has the following inputs/outputs: Digital Optical, USB, Composite Video, RF Antenna, Ethernet, 4 x HDMI. All of the HDMI ports on the the 65SK8000PUA are HDMI 2.0 ports and all are HDCP 2.2 compliant so all of them support 4K @ 30/60 Hz. ^CP
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