Why is my scanner only recognised as a USB device?
Error description
The scanner is only displayed as a USB device in Windows Device Manager. An attempt to update the driver fails.
Causes of errors
The error occurs if the USB cable is too long or defective and if the scanner is connected to a USB hub.
Troubleshooting
In general, the scanners should not be connected to a passive USB hub (passive means that the hub does not have its own power supply). This often leads to errors. Try connecting the scanner directly to the computer via a USB cable. Then try to install the driver for the scanner again.