Discover the last drive letter of the USB Device when it was plugged into the machine.
XP: * Find ParentIdPrefix – SYSTEM\CurrentControlSet\Enum\USBSTOR * Using ParentIdPrefix Discover Last Mount Point – SYSTEM\MountedDevices Win7/8/10: * SOFTWARE\Microsoft\Windows Portable Devices\Devices * SYSTEM\MountedDevices - Examine Drive Letters looking at Value Data Looking for Serial Number
Identify the USB device that was last mapped to a specific drive letter. This technique will only work for the last drive mapped. It does not contain historical records of every drive letter mapped to a removable drive.