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Seagate Expansion 4TB portable hard drive in a compact 2.5 inch enclosure with USB 3.0 connectivity

Seagate

Seagate Expansion Portable 4TB 2.5 Inch USB 3.0 (STKM4000400)

SKU CH-NDAY-W31W9

A 4 TB portable drive adds instant storage to Windows or Mac with USB 3.0 drag-and-drop simplicity

  • Add storage instantly with USB 3.0 speed
  • Simple drag-and-drop file saving works right away
  • Automatic recognition on Windows and Mac computers
  • Portable 2.5 inch design for files on the go
  • Includes limited warranty and Rescue Data Recovery Services

Portable storage for everyday files

The Seagate Expansion Portable 4TB is a 2.5 inch external hard drive that connects through USB 3.0. It adds capacity to Windows or Mac computers without extra power adapters and is ready for drag-and-drop file saving.

USB 3.0 interface for broad compatibility

The drive uses a USB 3.0 connection that works with both Windows and Mac systems out of the box. Mac users must reformat the drive before using it with Time Machine backup software.

Bus-powered design runs from the host port

Power is drawn directly from the USB 3.0 port so no external supply is needed. The mechanical drive operates at typical 2.5 inch acoustic and thermal levels for quiet desktop or mobile use.

Highlights

  • Add storage instantly with USB 3.0 speed
  • Simple drag-and-drop file saving works right away
  • Automatic recognition on Windows and Mac computers
  • Portable 2.5 inch design for files on the go
  • Includes limited warranty and Rescue Data Recovery Services

Specifications

No published specifications for this item yet.

Questions about this item

How much data can I store on this 4TB drive once it is formatted and connected to my computer?

The drive provides 4TB of raw capacity; after formatting the usable space is slightly lower and the manufacturer notes that available storage capacity may vary.

What transfer speed does the USB 3.0 interface actually deliver on this model?

The USB 3.0 connection supports up to 5 Gbit/s, so real-world throughput depends on the host port, cable quality and the type of files being moved.

Does the 2.5 inch form factor need an external power supply or special mounting hardware?

It is powered entirely through the USB 3.0 cable and fits in a standard 2.5 inch drive bay or portable enclosure without extra brackets.

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