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All 4 HDMI ports support 4K and HDCP 2.2. Only HDMI 4 supports ARC, which is typical for most TVs. Optical audio can be used for a soundbar but it would be best to have a soundbar with ARC support to take advantage of that feature. See www.rtings.com for an in-depth review of the TV too. They do a very good job of going through EVERYTHING on a TV.
Sorry, there was a problem. Please try again later.The e-Manual may help. http://support-us.samsung.com/nas/storage/201306131736006%5Estorage_attachment%5EF7450_-_8000,_S9_e-Manual.pdf
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