What is the blue USB thumb drive for?

What is the blue USB thumb drive for?

The blue USB key with a QuickScan logo is the QuickScan USB Software Key. This key must be plugged into the computer for the QuickScan software to launch. It must also be plugged into the computer to install software upgrades. This key can’t be used as a USB flash drive for data storage. Use caution to not bend, break, or lose the software key as it could make the QuickScan system unusable.