Automatic USB Backup uses an innovative backup and synchronization algorithm that offers true bi-directional backup ( backup local drive or backup USB drive) and synchronize files between more computers. Automatic USB Backup starts with your PC and constantly monitors your files and attached USB storage devices, ensuring that your backup is 100% up to date. User can selects the 'Silent mode' to do a secretly backup. Automatic USB Backup is set to a low priority, this ensures that it will not hog your system's resources when other programs are running. This enables it to run unnoticed in the background. It utilizes industry standard ZIP compression to maximize the number of files you can store on your USB drive. Even though your files are compressed, you will still be able to access your backup archive from Windows Explorer and other operating systems. USB Backup Portable installs and runs directly on any portable device such as a USB flash drive or portable hard drive.