Seagate Expansion STKP4000400 4 TB Desktop Hard Drive - External - Black - Desktop PC MAC Device Supported - USB 3.0-1 Year Warranty - Retail

- Digital Storage Capacity - 4TB; Get an extra layer of protection for your data with the included 3 year Rescue Data Recovery Services - Form Factor - 3.5 Inches, Hardware Interface - USB 2.0/3.0, Drive RPM - 7200 - Easy-to-use desktop hard drive?simply plug in the power adapter and USB cable - Automatic recognition of Windows and Mac computers for simple setup (Reformatting required for use with Time Machine) - Actual storage capacity may vary due to differences between decimal and binary calculations.