As for what happens if you try to connect a display over the USB 2 port, Apple tells John Gruber at Daring Fireball that macOS will warn you that you’re using the wrong USB-C port.
If you’ve used Linux for a long time, you know that we are spoiled these days. Getting a new piece of hardware back in the day was often a horrible affair, requiring custom kernels and lots ...
If your mouse is ever laggy or skips, then it could be because it's plugged into the wrong port. It could be a bad location, or the wrong bandwidth.
Cars coming with USB ports have been so helpful, letting drivers charge their phones without getting an adaptor that plugs into the old cigarette lighter port.