Seagate Expansion Portable 4TB External Hard Drive HDD - 2.5 Inch USB 3.0, for Mac and PC with Rescue Data Recovery Services (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.