I Googled USB2.CAT, and it appears that this driver is to drive
(what else?) USB ports under the USB 3.1 specification.

At least that's what I've gathered.

But where and how the various SYS, CAT, DLL, and INF file are to be installed leaves me cold.

I'll post this now, in the hope that others will know that set of answers. Be back later.

In the meantime, I'm going to look in various directories, in the hope of seeing files denominated as USB, to serve as guideposts.

Dave Oesterreich