2TB WD My Book Essential External USB 3.0 Series External...

Key Features
2TB Hard Drive Capacity
USB 3.0/2.0 Interface
Formatted HFS+ Journaled
WD Security Password Protection

Apple Time Machine Compatible
Help protect important information with Apple Time Machine.
USB 3.0 Interface
With this single drive you can connect to a USB 3.0 port for SuperSpeed transfer rates or connect to a USB 2.0 port for Hi-Speed USB connectivity.
Ultra-Fast Transfer Rates
When connected to a SuperSpeed USB 3.0 port this device lets you access and save files up to 3 times faster than USB 2.0.
WD Drive Utilities
Register your drive, set drive timer, run diagnostics and more using the WD Drive Utilities.
Designed for Mac
Formatted for Mac and compatible with Apple Time Machine, this drive is plug-and-play ready for Mac Computer users.