WD My Book 4TB 3.5″ External Hard Drive – Expand your storage with 4TB of digital space. Features a SuperSpeed USB 3.0 port (USB 2.0 compatible) and a durable plastic design. Preformatted in NTFS for Windows, easily reformat for Mac or other systems. Includes device management and automatic backup software with 256-bit AES hardware encryption. Comes with a 3-year warranty.
