Prepping for new hardware, I uninstalled my CH Control Manager software. The uninstall routine notified me that I needed to have all CH devices unplugged in order to continue, and I had already done that. After uninstall and reboot, Windows set up "unknown device", so I checked Device Manager, and uninstalled the "unknown device". Upon reboot, it just reinstalled the "unknown device". I can't get rid of this device.
Apparently there is something left over in the registry. I'm not good with that but I did a search for the device ID and deleted what I found. Still, it installs the unknown device after each time I uninstall it.
Any help appreciated.