+ 0 Votes Was looking in to this just the other day at work. 1bn0 6 years ago Found this link wich looked promising. http://www.sandstorming.com/2006/06/backup-usb-drive-on-insertion/ Use different directories for the different usb sticks. I was also wondering about doing some kind of check to verify the identity of the computer the USB key is plugged in to so it would only back up on my home machine but not on any of the other machines I work with. Maybe create a file on the c: drive of the host computer and have the batch file check for the existence of the file. Hope this helps.