yep I just did extract to the usb2.0 flash drive... (I think I did a search on those files earlier, in my download folder and did not find any usb3hub or usb3hxf files.) So this will be a bit more "global" in that gigabyte website may have different inf or driver files.
We will soon find out, eh?
when extracting to the flash drive the files are in a folder called USB3 with a creation date of 12/20/10.