Fixing a buried bandwidth setting on my Samsung Frame TV sent me down a rabbit hole. If one HDMI option could change picture quality that much, I wanted to know what else those menus were hiding. I worked through every HDMI setting on every TV in the house: two Frame TVs, a Hisense CanvasTV, and a few TCL Roku sets. The ports carry far more than video. They handle remote commands, latency signals, copy protection, and, on paper at least, networking. Most of it ships disabled, renamed, or buried where nobody looks. Four of these features are worth enabling tonight. One is always on whether you like it or not. The last one, nobody has ever managed to turn on.
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