Western Digital

Western Digital 4TB Blue My Passport Portable External Hard Drive - USB 3.0 - Western DigitalBYFT0040BBL-WESN

Name: Western Digital 4TB Blue My Passport Portable External Hard Drive - USB 3.0 - Western DigitalBYFT0040BBL-WESN
Brand: Western Digital
SKU: B01LQQH842

Status: Western Digital 4TB Blue My Passport Portable… (4TB hard drive): Unavailable on Amazon as of 2026-10-22 04:30 UTC. Closest in-stock match (same 4TB hard drive): WD 4TB My Passport, $228.00 on Amazon as of 2026-10-21 12:20 UTC (price may vary). eBay sellers may still list this model new or used.

View Current Price — $228.00 🛒 Search eBay for this model

Bottom line: The Western Digital 4TB Blue My Passport Portable External Hard Drive: 4TB in a palm-sized shell - no external power brick required; main trade-off: requires reformatting before it works with Mac OS X.

Unavailable on Amazon as of 2026-10-22 04:30 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives with matching specs:

Same 4TB hard drive: WD 4TB My Passport — $228.00 on Amazon as of 2026-10-21 12:20 UTC (price may vary).

View Current Price — $228.00

Same 4TB hard drive: WD 4TB My Passport for Mac — $228.50 on Amazon as of 2026-10-21 12:20 UTC (price may vary).

View Current Price — $228.50

Same 4TB hard drive: Western Digital 4TB My Book Desktop External… — $263.00 on Amazon as of 2026-10-21 12:20 UTC (price may vary).

View Current Price — $263.00

Original listing (currently unavailable) → Compare to similar external storage

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-22

Mike Perry — Hardware researcher since 2014. For external drives and portable storage, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ 4TB in a palm-sized shell - no external power brick required
✓ Included WD Backup software schedules automatic backups
✓ Hardware encryption plus password protection for the whole volume
✓ USB 3.0 with USB 2.0 backward compatibility on older machines
✓ 3-year manufacturer's limited warranty from Western Digital

Cons

✗ Requires reformatting before it works with Mac OS X
✗ Ships formatted for Windows 10, 8.1 and 7 only
✗ Spinning platter drive - slower than an SSD for large transfers
✗ WD Backup software is Windows-oriented, not cross-platform

Manufacturer description

The Western Digital 4TB Blue My Passport Portable External Hard Drive gives you a palm-sized place to park four terabytes of photos, video projects, music libraries, and documents without carrying a desktop enclosure. It connects over USB 3.0 (and stays backward compatible with USB 2.0), so older laptops and newer machines both recognize the drive without an adapter or a separate power brick. Two features do the heavy lifting. The bundled WD Backup software runs automatic, scheduled backups so your working files copy over without you remembering to drag folders. Hardware encryption with…

SpecPicks Verdict

SpecPicks scored Western Digital 4TB Blue My Passport Portable External Hard Drive 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 4TB work with a Mac?

Not out of the box. Western Digital lists Windows 10, Windows 8.1, and Windows 7 compatibility; the drive requires reformatting for Mac OS X before you can use it.

Do I need a separate power adapter for this drive?

No. It is a portable USB 3.0 drive that draws power over the single USB cable, so there is no wall adapter to pack.

Will it work if my computer only has USB 2.0 ports?

Yes. The drive uses a USB 3.0 port but is USB 2.0 compatible, so it connects to older machines at USB 2.0 transfer speeds.

How do I password protect the files on this drive?

The My Passport includes password protection backed by hardware encryption, set up through the software WD bundles with the drive.

What warranty comes with the WD 4TB My Passport?

It carries a 3-year manufacturer's limited warranty. Check the product listing for current terms and regional coverage before you buy.

Key Features

Auto backup with included WD Backup software
Password protection with hardware encryption
Trusted drive built with WD reliability
USB 3.0 port; USB 2.0 compatible; SYSTEM COMPATIBILITY: Windows 10, Windows 8.1, Windows 7; Requires reformatting for Mac OS X operating system
3 year manufacturer's limited warranty
Order with your Alexa enabled device; Just ask "Alexa, order WD My Passport"

Full Specifications

Brand	Western Digital
Color	BLUE
Model Name	My Passport
Unit Count	1 Count
Form Factor	Portable
Connectivity	USB
Model Number	WDBYFT0040BBL-WESN
Compatibility	Mac
Built-In Media	Portable hard drive^USB 3.0 cable^Quick Install Guide
Item Type Name	WD My Passport Portable Hard Drive and auto backup software ,Blue ,4 TB (WDBYFT0040BBL-WESN)
Hard-Drive Size	4 TB
Mfr Part Number	WDBYFT0040BBL-WESN
Number of Items	1
Special Feature	Alexa
Item Part Number	WDBYFT0040BBL-WESN
Hardware Platform	PC
Installation Type	External Hard Drive
Compatible Devices	PC
Data Transfer Rate	1 megabytes_per_second
Enclosure Material	plastic

Ready to buy?

Amazon shows no buyable offer for Western Digital 4TB Blue My Passport Portable… at the last check. The closest in-stock match with the same 4TB hard drive is WD 4TB My Passport. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price — $228.00