Store large amounts of photos, videos, music and documents on the My Book desktop storage. With several terabytes of storage capacity, the My Book hard drive is the ideal repository for all your digital data.Set up automatic backup and determine how often and when your data is backed up. The My Book desktop hard drive comes with WD Backup software for Windows and is compatible with Apple Time Machine for Mac.With built-in 256-bit AES hardware encryption and WD Security, you can set your own password to protect your content. So your content is always confidential and protected. You can configure WD Security to automatically unlock the device on your computer. This allows you to access your data quickly and conveniently without having to enter the password every time.