backup

files are sometimes easy to be taken care of, but hard when you want them back when lost. one situation, is when your computer has crashed and you have important files stored inside it and you can't retrieve it. very frustrating right. as a precaution, many experts use USB's to store the same files as their backup.

source:nextgendigitalhome.com

this is a wise way of using your USB. if your first files are missing or accidentally deleted, you don't have to worry because you have the backup.