Western Digital My Book 4 TeraByte USB 3.0
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WD My Book 4TB USB 3.0 Desktop Hard Drive WDBBGB0040HBK
Auto backup with included WD Backup software and Time Machine compatibility
Password protection with hardware encryption
Reimagined design
Easy to use
Trusted storage built with WD reliability
Up to 4TB capacity
USB 3.0 port; USB 2.0 compatible