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HDMI 2 on the LG UHD 73 Series 65 inch Class 4K Smart UHD TV with AI ThinQ® (64.5'' Diag), Model # 65UN7300PUF is an HDMI port that supports HDMI ARC functionality so if your Soundbar has an HDMI ARC port on it, you can connect it to the TV;s HDMI ARC port. The TV also features an Optical Digital Audio Out so if your Soundbar has an Optical Digital Audio In, you can connect the ports using an Optical cable...^IFV
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