TRUSTED AND LOVED HIGH-CAPACITY STORAGE. REIMAGINED DESIGN.Compact outside. Powerful inside. Store massive amounts of photos videos music and documents with My Book desktop storage.Complete BackupEquipped with WD Backup software for Windows and Apple Time Machine compatibility for Mac the My Book desktop hard drive can back up your photos videos music and documents. The My Book desktop hard drive also works great with Acronis True Image WD Edition software to schedule full system backups.Password ProtectionWith built-in 256-bit AES Hardware Encryption with WD Security software just set your own personalized password to help keep your content private and safe.WD ReliabilityMillions of people around the world trust their data to My Book desktop storage. Designed to meet WDs demanding requirements for durability shock tolerance and long-term reliability we back up (pun intended!) the trusted My Book desktop storage with a 3-year limited warranty.WATCH THE POWER OF MY BOOK COME TO LIFEWe live hectic lives and generate tons of digital content. My Book desktop storage has massive storage capacity so you can confidently back up the files that make up your digital life.TECHNICAL SPECIFICATIONSFormatted exFAT for out-of-the-box compatibility with Windows and Mac. Operating System: Windows 10 Windows 8 Windows 7 Mac OS X El Capitan Yosemite or Mavericks. May require reformatting for other operating systems. Compatibility may vary depending on users hardware configuration and operating system.