Western Digital
Western Digital WD 4TB My Passport Ultra (WDBFTM0040BBL-WESN)
Bottom line: The Western Digital WD 4TB My Passport Ultra ($238.99 on Amazon as of 2026-10-08): 256-bit AES hardware encryption with password protection built in; main trade-off: formatted for Windows out of the box; Mac users must reformat.
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*Price sourced from Amazon.com. Last updated 2026-10-08. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 256-bit AES hardware encryption with password protection built in
- ✓ USB-C plus USB 3.1 support, no dongle needed on modern laptops
- ✓ 4TB capacity in a pocketable portable enclosure
- ✓ 3-year manufacturer's limited warranty
Cons
- ✗ Formatted for Windows out of the box; Mac users must reformat
- ✗ Mechanical hard drive, so slower than an SSD of the same size
- ✗ WD Backup software is Windows-oriented, not cross-platform
- ✗ Metal cover shows fingerprints and scuffs with daily carry
Manufacturer description
The WD My Passport Ultra pairs a metal-and-matte 4TB portable drive with the backup and encryption tooling most people skip setting up on a bare external disk. Western Digital ships it with USB-C and USB 3.1 connectivity, so it plugs straight into a modern laptop without an adapter and still falls back to older USB-A ports. The headline feature is 256-bit AES hardware encryption with password protection: your files are locked at the drive level, not by a folder trick, which matters if the drive travels in a bag. WD Backup software handles scheduled backups and social media or cloud imports…
SpecPicks Verdict
SpecPicks scored Western Digital WD 4TB My Passport Ultra using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Western Digital's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Does the WD My Passport Ultra 4TB work with a Mac?
It ships formatted for Windows, so you will need to reformat it to APFS or Mac OS Extended before using it with Time Machine. The USB-C connection itself works with Mac hardware.
Is the password protection real encryption or just a software lock?
It uses 256-bit AES hardware encryption paired with password protection, so the data is encrypted at the drive level rather than hidden behind a software folder lock.
Can I plug this into an older USB-A port?
Yes. The drive is USB-C and USB 3.1 compatible, so it works with USB 3.1 ports; check the listing for which cable or adapter is included in the box.
What warranty does Western Digital include?
Western Digital lists a 3-year manufacturer's limited warranty on this model. Check the product listing for current terms and regional coverage.
Is this an SSD or a spinning hard drive?
It is a portable external hard drive, not an SSD, which is how it reaches 4TB at this size and price point. Expect hard-drive transfer speeds rather than SSD speeds.
Key Features
- USB-C and USB 3.1 compatible
- Innovative style with refined metal cover
- Password protection with 256-bit AES hardware encryption
- Formatted for Windows
- 3-year manufacturer's limited warranty
Full Specifications
| Brand | WD |
|---|---|
| Color | Blue |
| Model Name | My Passport Ultra |
| Unit Count | 1.0 Count |
| Form Factor | 2.5-inch |
| Media Speed | 100-150 MB/s |
| Connectivity | USB-C |
| Model Number | WDBFTM0040BBL-WESN |
| Built-In Media | Portable hard drive, Quick Start Guide, USB 3.0 cable |
| Item Type Name | WD 4TB Blue My Passport Ultra Portable External Hard Drive - USB 3.0 - WDBFTM0040BBL-WESN |
| Hard-Drive Size | 4 TB |
| Mfr Part Number | WDBFTM0040BBL-WESN |
| Number of Items | 1 |
| Special Feature | Hardware Encryption, Portable |
| Hardware Platform | Mac, PC |
| Installation Type | External Hard Drive |
| Compatible Devices | PC |
| Data Transfer Rate | 2.5 Megabytes Per Second |
| Enclosure Material | Metal |
| Additional Features | Hardware Encryption, Portable |
| Full listing title | WD 4TB My Passport Ultra, Blue, Portable External Hard Drive, backup software with defense against ransomware, and password protection, USB-C and USB 3.1 - WDBFTM0040BBL-WESN |
Ready to buy?
WD 4TB My Passport Ultra, Blue, Portable External Hard Drive, backup software with defense against ransomware, and password protection, USB-C and USB 3.1 - WDBFTM0040BBL-WESN is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-08. Price and availability subject to change.
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