Complete Backup Equipped 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. Password Protection The My Book drive’s built-in 256-bit AES hardware encryption with WD Security™ tools helps keep your content private and safe. Just activate password protection and set your own personalized password. WD Reliability Millions of people around the world trust their data to My Book desktop storage. Designed to meet WD’s demanding requirements for durability, shock tolerance, and long-term reliability, we back up (pun intended!) the trusted My Book desktop storage model : ADATA XPG SX6000 Lite 512GB PCIe 3D NAND PCIe Internal Solid State Drive tag : External Hard Drives