Seagate Expansion Portable 4TB External Hard Drive 2.5 Inch USB 3.0 for Mac and PC (STKM4000400)

- Sleek and simple portable drive design for taking photos, movies, music, and more on-the-go - Drag-and-drop file saving - USB 3.0 powered - Automatic recognition of Windows and Mac computers for simple setup (Reformatting required for use with Time Machine) - Enjoy peace of mind with the included limited warranty and Rescue Data Recovery Services - The available storage capacity may vary.