Digital Optical Audio Cable vs HDMI ARC: Which Audio Cable Should You Buy - Guiding Tech
What Is HDMI CEC? Everything You Need to Know!
Amazon.com: 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
HDMI ARC and CEC not working? Try these fixes | Trusted Reviews