[ncmncm]

Nothing was clear unless you already knew enough not to need the description at all.

A "USB switch" reads like a switch with a USB cable on it, that the computer it is plugged into can see when it changes. Which is fine, except the fact that a keyboard and mouse are also presumed to be plugged in is not said or hinted.

"DDC/CI" is similarly undefined. A program switching video inputs makes no sense: a computer produces video output, not input. You would need to know the program is sending commands to the monitor to tell that to switch to a different input.

Both of these facts could easily have been in the first sentence. Without, the whole article is noise.