USBDeview is a small freeware app that lets you view details about USB devices that anybody ever used with your PC. The program does not require installation and is very easy to use. Just double-click the .exe file and see the list of all USB devices that were previously or are currently connected to your computer. The program also provides details about each USB device, such as its description and type, product ID, serial number (for mass storage devices), etc. The software also lets you uninstall USB devices you used before and safely disconnect the ones that are currently connected to your PC. Read the full review.