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Silver rectangular portable hard drive with metal cover, USB-C cable and adapter included

Western Digital

Western Digital My Passport Ultra 4TB portable hard drive WDBFTM0040BSL-WESN

SKU CH-A4CV-PZP0P MPN WDBFTM0040BSL-WESN

A 4TB portable hard drive with USB-C and USB 3.1 connectivity, 256-bit AES hardware encryption and a metal silver enclosure

  • ColorSilver
  • InterfaceUSB 3.0, USB-C
  • Capacity4TB
  • RPM5400 RPM
  • FeaturesUSB-C and USB 3.1 Compatible Featuring USB-C technology, the
  • System RequirementsWindows 10, 8.1 or 7 Downloadable NTFS driver to read/write

Capacity 4TB

Struck-through versions exist but are not stocked here.

  • 4TB capacity stores large media libraries and backups
  • USB-C and USB 3.1 interfaces connect to modern and legacy PCs
  • 256-bit AES hardware encryption protects files with password security
  • WD Discovery software automates hourly, daily or monthly backup plans
  • Silver metal enclosure measures 0.83" x 3.21" x 4.33" and weighs 0.51 lb.

What this drive is and who it suits

The Western Digital My Passport Ultra 4TB is a portable external hard drive with a silver metal cover and a 5400 RPM mechanism. It connects via USB-C and includes a USB 3.1 adapter for older USB 3.0 ports. The drive arrives formatted for Windows 10, 8.1 or 7 and offers 256-bit AES hardware encryption with password protection through WD Discovery software.

Who should look elsewhere

This drive is not for buyers who need a solid-state device with no moving parts. It is also not for users who require bus-powered operation above the limits of a single USB 3.0 port or who need native macOS formatting without reformatting for Time Machine.

The spec that decides fit

The single specification that decides whether this is the right part is the USB-C interface combined with the included USB 3.1 adapter, which determines compatibility with the target computer's available ports.

Highlights

  • 4TB capacity stores large media libraries and backups
  • USB-C and USB 3.1 interfaces connect to modern and legacy PCs
  • 256-bit AES hardware encryption protects files with password security
  • WD Discovery software automates hourly, daily or monthly backup plans
  • Silver metal enclosure measures 0.83" x 3.21" x 4.33" and weighs 0.51 lb.

Specifications

BrandWD
SeriesMy Passport Ultra
ModelWDBFTM0040BSL-WESN
ColorSilver
InterfaceUSB 3.0, USB-C
Capacity4TB
RPM5400 RPM
FeaturesUSB-C and USB 3.1 Compatible
Featuring USB-C technology, the My Passport Ultra portable drive delivers quick and easy storage for your PC, while the included USB 3.1 adapter makes sure it's compatible with older machines.
Password Protection with 256-bit AES Hardware Encryption
The WD Security function within WD Discovery helps keep your files private with a password you can choose, making it easy to enable password protection and 256-bit AES Hardware Encryption.
Innovative Style and Function
Fusing modern anodized metal and textures, the My Passport Ultra portable drive is available
System RequirementsWindows 10, 8.1 or 7
Downloadable NTFS driver to read/write on macOS
Reformatting required to use Time Machine on macOS
Compatibility may vary depending on user's hardware configuration and operating system
Dimensions0.83" x 3.21" x 4.33"
Weight0.51 lb.
Package ContentsMy Passport Ultra Portable Storage
USB-C cable with USB 3.1 adapter
WD Discovery software* for WD Backup and WD Drive Utilities
Quick install guide
*Internet activation required
Shipping weight0.34 kg
Package size225 × 156 × 39 mm

Other versions of this model

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Questions about this item

Should I choose the 4TB model or a smaller capacity for regular backups?

The 4TB capacity provides ample space for large photo libraries, video projects and full system backups, while the 5400 RPM drive keeps the unit compact and quiet for daily transport.

What does the 5400 RPM speed mean for real-world file transfers?

The 5400 RPM mechanism delivers steady throughput for documents, media and incremental backups; large single files move at mechanical-drive speeds rather than SSD rates.

How does the USB 3.0 and USB-C interface affect transfer limits?

The drive uses a USB 3.0 Type-C connection with an included USB 3.1 adapter, so maximum throughput is capped by the USB 3.0 specification on both Type-C and Type-A ports.

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