Missing usb driver

[ToddAndMargo]

Hi All,

Host:
   Fedora 31, x64
   qemu-kvm-4.1.0-5.fc31.x86_64
   USB Controller (USB3):

<controller type="usb" index="0" model="qemu-xhci" ports="15">
  <alias name="usb"/>
  <address type="pci" domain="0x0000" bus="0x00" slot="0x05" 
function="0x0"/>
</controller>


VM:
   Windows 7 Pro, SP1, x64


In my VM's device manager, it has a bang mark on
    Universal Serial Bus (USB) Controller

And Windows can not find the appropriate driver in:
    virtio-win-0.1.173.2.iso/virtio-win-gt-x64.msi
or the search the web find it.

And Windows can not find a USB device I redirect to it.

I don't have the problem with my Windows Ten -  1909 VM.

Any word of wisdom?

Many thanks,
-T