Comment # 6 on bug 1205737 from Larry Finger

I do have a USB scanner - a Canoscan LIDE 200, which is a USB 2 device. My
testing, so far, results are as follows:

Using a fully updated fresh install of a TW VM without installing any Guest
Additions in guest. 7.0.4 additions in host, using xsane for scan program:

openSUSE Tumbleweed host - Tumbleweed guest - USB 3 port: Everything works.
openSUSE Tumbleweed host - Tumbleweed guest - USB 2 port: Everything works.

Both ports initially got a garbled input and had to be disconnected and xsane
restarted.

After installing Guest Additions 7.0.4:

openSUSE Tumbleweed host - Tumbleweed guest - USB 3 port: Everything works.
openSUSE Tumbleweed host - Tumbleweed guest - USB 2 port: Everything works.

Again, it took some fiddling to get the correct output from xsane.

With a Windows 7 VM, the device manager reports that the driver is unable to
start for either USB2 or 3.

With a Windows 10 VM and using the driver for Windows 8.1, which is reported to
work, the Device Manager says the "The device reported an I/O error." I
reinstalled the driver and the Guest Extensions without any effect.

To test if the problem was that suspect Windows driver, I installed the driver
and software for an Epson V600, which works on my wife's Windows 10 machine.
Again the I/O error resulted.

It appears that the problem is only with Windows, other than the problems
getting a correct connection in Linux, but that may not be new. I have only
done scanning with the host until this test.