I’ve used Windows hosts on a Mac in virtual box for years, but the other day I had to set one up quickly on a spare machine to make an installer USB for a Windows 10 PC. I won’t go into the VM setup process, as that’s pretty well documented, but the USB problems I had were much harder to track down.
Install the Extension Pack on the host (Not guest additions in the guest, although you should do that anyway)
It’s common for a VM guest to need access to one of the host USB devices. In this case a USB stick.
I had everything setup as normal, used a filter to select the USB stick I wanted to pass into the VM, the Windows VM could see the USB appear in Device Manager but it had a dreaded “unable to start device” ??
For some bizarre reason, the default virtual USB hub is just USB 1.1. After installing the extension pack, I could select USB 2.0 or 3.0 and voila, the USB stick mounted as normal (and I could proceed to create the install USB).
I’m not sure if I already have this installed in my usual VMs and that’s why I’ve never had the problem, or if something is different about this setup, but it totally fixed my problem.