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Can't figure out if there is a HDMI-CEC setting on tv. I have the Costco TCL 55S434 and plugged Roku Streambar Pro into the HDMI (ARC) and I can't power it on/off
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BlueRigger 4K HDMI CEC Less Adapter (4K, UHD, ARC, 1080p, Ethernet) - HDMI Male to Female Adapter - Compatible with HDTV, TV Stick, Game Consoles, Laptops, Soundbar : Electronics
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Samsung Smart TV: How to Turn On 'HDMI - CEC - ARC' (Anynet+) - YouTube
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Toshiba Fire TV: Turn HDMI-CEC Arc/eArc ON or OFF - YouTube
HDMI CEC vs ARC: In Depth Comparative Analysis and Facts