Some devices will remain in the system, even after you unplug or replace them, the so-called invalid devices. This tool can help you to clean their data from your system entirely.
Select "Toolkit" and then "Clean Invalid Devices':
Select the device(s) you need to clean and proceed with "Next":
NOTE: All external devices, such as USB portable hard disks, printers and scanners are regarded as invalid. There is no need to clean their data if you plan on using them in the future.