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Seagate Expansion Portable 4TB External Hard Drive HDD - 2.5 Inch USB 3.0, for Mac and PC with Rescue Data Recovery Services (STKM4000400)

In stock. Limit 5 per customer.
Ships from Canada.
  • 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.

Learn more about the Seagate STKM4000400

Brand Seagate
Series Expansion
Model STKM4000400
Color Black
Interface USB 3.0
Capacity 4TB
Features The Seagate Expansion portable drive is compact and perfect for on-the-go. Instantly add more storage space to your PC or Mac and take large files with you when you travel.

Setup is simple and straightforward; simply connect a single USB cable and you are ready to go. The drive is powered from the USB cable, so there is no need for an external power supply. Plus, it is automatically recognized by the Windows or Mac operating system, so there is no software to install and nothing to configure. Saving files is easy - simply drag-and-drop.

Take advantage of the fast data transfer speeds with the USB 3.0 interface by connecting to a USB 3.0 port.

Plus, Seagate Expansion comes with Rescue Data Recovery Services for additional peace of mind.
System Requirements Compatible with most Windows and macOS systems. Visit for details1,2
USB 3.0 port (required for USB 3.0 transfer speeds)2

1 Reformatting required for use with Time Machine.
2 Compatibility may vary depending on user's hardware configuration and operating system.
Dimensions & Weight
Form Factor 2.5"
Dimensions 0.82" x 3.15" x 4.54"
Weight 0.57 lb.
Package Contents Seagate Expansion portable hard drive
18-inch (45.72cm) USB 3.0 cable
Quick start guide
Rescue Data Recovery Services3

3 Rescue Data Recovery Services not available in all countries.
Additional Information
Date First Available May 13, 2021

Warranty & Returns

Warranty, Returns, And Additional Information


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Return Policies

  • Return for refund within: 30 days
  • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy