Recenty I've tried to Install Windows 7 on an usb 3.0 only ultrabook and was greeted with a message about it not having the correct drives because Windows 7 Doesn't support USB 3.0 Natively:
"A required CD/DVD drive device driver is missing" or "A media driver your computer needs is missing" error message when you install Windows"

After about 2 hours of messing about and trying to point the Windows installation to the drivers on the usb stick it just wasn't having it.

And then I found out about the Windows 7* USB 3.0 Creator Utility which Intel made just for a few specific Intel NUC's which are also only USB 3.0 like the aforementioned ultrabook.
So regardless of that I decided to have a look at it and see what it É/downloadcenter.intel.com/download/25476/Windows-7-USB-3-0-Creator-Utility) which Intel made just for a few specific Intel NUC's which are also only USB 3.0 like the aforementioned ultrabook. So regardless of that I decided to have a look at it and see what it does and after downloading it I saw this:

This whole utility made just for a specific Intel product is just an .exe file with a USB__Drivers folder and if we go into that folder it's just a folder with the drivers in it. No funny file formats or nothing. So if you download USB 3.0 drivers for your laptop and replace the drivers from the Intel tool USB_Drivers with yours, it will install the correct driver to your USB Drive Windows Image and you can install your Windows as normal:

You're welcome!