Among other features, your soundbar may have additional HDMI ports, apart from the one to connect to your TV. Here's what you can use them for.
So I just bought myself a 5.1 surround sound ARC enabled sound bar, the Vizio SB36512-F6. This is currently being plugged into a TCL 55R617. My plan, with how my understanding of how HDMI ARC should ...
HDMI cables can do more than just sending video to your TV.