Safely store massive amounts of photos, videos and music with this 4TB external drive from WD. It comes equipped with WD Backup software so you can automatically back up photos, videos, music and documents on your preferred schedule. And built-in 256-bit AES hardware encryption with WD Security software helps keep your content private and safe. The 4TB My Passport model is currently priced just $10 higher than its 3TB counterpart with this 31% off deal. See it now on Amazon.