A:Answer Any decent modern HDMI cable should work. I understand some very old cables will not, 2012 and before.
I used a basic hdmi cable from the ARC/HDMI out of my off brand tv to the sound bar. It synced up instantly and works great. I am very pleased with the bar, the tv’s internal speakers were severely lacking.
You may have to turn your TVs internal speakers off, i did. It sounded better with just the sound bar.