It's been brought up in my W7 threads before I think, but I'm wondering if there is any way to find out what it is. It is shown in Device <Manager as Unknown device.
Ok, I've done this
"Right click the device->Update driver. Select the option for Windows to search online for a driver. If Windows can't find anything" .
& nothing was found. Will try the other & post back.
Results are here
Have you tried to uninstall it. To see if maybe see if windows will reinstall it. If maybe a failed driver to something the previous owner had installed on the computer