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Black rectangular 2.5 inch portable hard drive with Micro-USB Type B port

Western Digital

Western Digital My Passport 4TB portable hard drive black

SKU CH-E31A-0A8EV

A 4000 gigabyte portable hard drive with a 2.5 inch form factor, USB 3.0 interface and included backup software

  • 4TB capacity stores thousands of photos and documents
  • USB 3.0 interface enables fast file transfers
  • Backward compatible with USB 2.0 for wider device support
  • USB-powered design removes the need for an external adapter
  • WD Backup software provides automatic protection for your files

Capacity and audience

The Western Digital My Passport delivers 4000 gigabytes of portable storage in a 2.5-inch enclosure. It suits students, creatives and mobile professionals who need a single drive for documents, photos, music and video libraries. The black finish gives it a discreet look for everyday carry. USB power means no separate adapter is required.

USB 3.0 interface limits

The drive connects through a Micro-USB Type B port using the USB 3.0 standard. It remains backward compatible with USB 2.0 hosts, though transfer rates will fall to the older specification. Performance is bounded by the mechanical hard-disk mechanism rather than the interface ceiling. Cable length and host controller quality also affect real-world throughput.

Form factor and power constraint

The 2.5-inch physical size allows the unit to draw all necessary power from the USB bus. Systems that cannot supply sufficient current on a single port may require a Y-cable or powered hub, which is not included. Buyers needing higher bus-powered capacity or a smaller connector such as USB-C should evaluate alternative models.

Highlights

  • 4TB capacity stores thousands of photos and documents
  • USB 3.0 interface enables fast file transfers
  • Backward compatible with USB 2.0 for wider device support
  • USB-powered design removes the need for an external adapter
  • WD Backup software provides automatic protection for your files

Specifications

No published specifications for this item yet.

Questions about this item

Should I pick the 4000 gigabyte version or a smaller capacity?

The 4000 gigabyte model gives you the most room for documents, photos, music and video in a single 2.5 in. portable drive.

What does the USB 3.0 label mean for actual file transfers?

USB 3.0 connects the drive at up to 5 Gbit/s, so large folders move at the mechanical drive’s own speed rather than being limited by the older USB 2.0 ceiling.

The drive uses a Micro-USB Type B port — what does that cap in practice?

Micro-USB Type B carries the USB 3.0 signal and draws power from the same cable, so no external adapter is needed and the drive works on any USB 3.0 or USB 2.0 port.

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