Western Digital

Western Digital WDBFKT0040BGD-WESN 4TB My Passport Ultra Drive

4.3 (274 reviews)
USB 3.0USB 2.0

4TB of USB 3.0 portable storage in a metal-finish chassis — the My Passport Ultra is a reliable backup drive that travels as well as it stores.

$199.99*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The Western Digital My Passport Ultra 4TB is a purpose-built portable backup drive occupying the practical middle ground between budget external storage and professional-grade portable SSDs. Its 4TB capacity — enough for multiple full system image backups, a large media library, or years of project archives — is delivered via a 2.5" spinning hard disk over a USB 3.0 interface. Real-world sequential transfer speeds settle around 100–130 MB/s, which is the ceiling of what current-generation 2.5" HDDs can sustain. That's genuinely useful for large file moves and scheduled backups, though it's a clear step below what NVMe-based portables can do. The metal and matte finish chassis is one of its more distinguishing features in this category — it feels noticeably more solid than the all-plastic shells common at this price tier.

The included WD Discovery software adds password protection backed by hardware AES encryption, automatic backup scheduling, and cloud/social media import functionality. For users who need encrypted portable storage without configuring third-party tools, that's a legitimate workflow benefit. The drive is entirely bus-powered over USB, which keeps the carrying kit minimal — cable only, no brick. The primary practical limitation is the USB-A connector: it works perfectly on older hardware, but users on modern thin laptops with only USB-C ports will need an adapter or hub in the bag. This is a drive that earns its place as a dependable, high-capacity backup volume for creators, IT professionals, and anyone managing a large local archive.

Key Features

Brilliant design, pairing metal and matte finishes

Included WD Discovery software for social media and cloud storage import, backup and password protection

3-year limited warranty

Trusted drive built with WD reliability

USB 3.0 port; USB 2.0 compatible

Specifications

Brand
Western Digital
Model
WDBFKT0040BGD-WESN
Capacity
4TB
Interface
USB 3.0 (USB 2.0 compatible)
Color
White-Gold
Warranty
3-Year Limited
Software Included
WD Discovery

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Pros & Cons

👍 Pros

  • 4TB capacity in a bus-powered portable form factor handles full system backups without requiring a power outlet.
  • USB 3.0 interface delivers consistent 100–130 MB/s real-world read speeds for bulk file transfers.
  • Hardware-level password protection and AES encryption are built in — no third-party security software required.
  • Metal and matte finish construction is more durable and premium-feeling than typical plastic portable drive shells.
  • 3-year limited warranty provides meaningful coverage for a drive used in regular backup rotation.

👎 Cons

  • HDD-based storage is significantly slower than portable SSDs for random access and small-file transfers — not suited for editing media directly off the drive.
  • Ships Windows-formatted (NTFS), requiring reformatting before use as a native Mac drive.
  • Spinning platter mechanism is vulnerable to damage from drops during active transport compared to solid-state alternatives.
  • WD Discovery software is bloatware for users who just want a straightforward backup volume — setup can feel cluttered.
  • USB-A connector limits compatibility with modern laptops that have moved fully to USB-C without an adapter.

Frequently Asked Questions

It uses USB 3.0, which supports theoretical transfer speeds up to 5 Gbps. Real-world sequential speeds for a 2.5" portable HDD like this land closer to 100–130 MB/s — fast enough for large file backups and media transfers, though not in the same class as portable SSDs.
It ships formatted for Windows (NTFS). Mac users will need to reformat to exFAT or HFS+ for native read/write access, or use the included WD Discovery software, which offers limited Mac compatibility. Reformatting erases any pre-loaded software on the drive.
No. The My Passport Ultra is bus-powered via the USB connection, drawing all necessary power from the host device's USB port. No separate power adapter is needed.
WD Discovery enables automatic backup scheduling, password protection with hardware encryption, and social media/cloud storage import (Google Drive, Dropbox, etc.). It's optional — the drive functions as standard portable storage without it installed.
Western Digital includes a 3-year limited warranty covering manufacturing defects. This does not cover accidental damage or data recovery.