There are a few extra pins you will see in a HDMI connector pinout. These are way more fun than you might know of, and I’m not even talking about the I2C as some might guess. For a start ...
But if you’re watching ‘normal’ 4K HDR video, any old HDMI cable should do. The full-size 19-pin Type-A HDMI port is the one you’ll see on the back of your TV and things like Blu-ray players and game ...