USB drives are likely to get infected by viruses, which can run automatically by adding a entry to the autorun.inf file in your USB drive.

USB is a freeware utility, that will prevent USB drives from loading programs automatically by automatically renaming autorun.inf files to autorun.inf_current date_time, and setting the file attribute to "normal", making it visible for system.

This in turn will disallow programs to automatically run when you insert a USB drive, you can also control and change the autorun status from the system tray.

Download USB Autorun.inf Blocker