WD - My Book 4TB External USB 3.0 Hard Drive - Black

Serial ATA interface; low power consumption; Acronis True Image WD Edition cloning software; data transfer rates up to 3 Gbps; 8MB buffer

Maximize your system's storage capacity with this Western Digital My Book External Hard Drive. Quick transfer rates move information three times faster than traditional hard drives. The My Book has universal connections to ensure compatibility with 3.0 and 2.0 USB devices. The drive also offers built-in 256-bit hardware encryption and optional password protection for peace of mind.