This is correct, we used a standard Mini-ITX form factor, and we've seen a number of customers pick up just the Mainboard and drop it into standard ATX cases. The power supply is also a standard FlexATX PSU.
If I could offer one correction, it would be that SBU (as specified by the USB 3.0 Promoter Group[1]) means "Sideband Use" rather than "Secondary Bus".
On some devices, it is used to carry UART; on others, audio.
Not the OP you responded too, but what the hell! I have not really used windows in a while but that's absurd. That text is massive just for an unsigned driver.
wow, didn't know about this, i developed some drivers and had this test mode enabled to debug some aspects of it, but now it is almost unusable with this on screen.