You’ve spent years building and refining your digital music collection, so don’t let a virus or computer crash wipe it out! The Music Vault is the easy-to-use backup system that gives you instant peace of mind. Simply plug it into a USB port on your PC or Mac and click "Start Backup." It automatically finds your music files and saves them, regardless of format. If it runs out of storage space, plug in another Music Vault and the backup continues seamlessly, without making duplicates. Available in three sizes: 8GB (approx. 2,000 MP3 songs), 16GB (4,000 songs) and 32GB (8,000 songs). System Requirements: Windows 7, 8, Vista, XP or later, or Mac OS 10.5 or later.