Search  for anything...
WD

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

  • Based on 19,432 reviews
Condition: New
Checking for the best price...
$139.99 Why this price?

Buy Now, Pay Later

As low as $23.33 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE refund/replacement until Jan 31, 2026

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, Mar 7
Order within 4 hours and 35 seconds
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Color: Blue


Capacity: 4TB


Style: PC


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

Description

The My Passport Ultra is trusted, portable storage in a design that brilliantly pairs metal and matte finishes to create a sophisticated style. It has plenty of space to store all the content you love. Social media and cloud storage import, WD Backup software and password protection help keep all your memories safe and secure. Easy to use, just plug it in to start saving and backing up.

Digital Storage Capacity: 4 TB


Hard Disk Interface: USB 3.0


Connectivity Technology: USB


Brand: WD


Special Feature: Hardware Encryption, Portable


Hard Disk Form Factor: 2.5 Inches


Hard Disk Description: Portable


Compatible Devices: PC


Installation Type: External Hard Drive


Color: Blue


RAM: ‎4 TB


Hard Drive: ‎4 TB Portable


Brand: ‎WD


Series: ‎My Passport Ultra


Item model number: ‎WDBFTM0040BBL-WESN


Hardware Platform: ‎Mac, PC


Operating System: ‎Mac reformatting, Windows 7+


Item Weight: ‎8.2 ounces


Product Dimensions: ‎4.33 x 3.21 x 0.83 inches


Item Dimensions LxWxH: ‎4.33 x 3.21 x 0.83 inches


Color: ‎Blue


Flash Memory Size: ‎4000 GB


Hard Drive Interface: ‎USB 3.0


Hard Drive Rotational Speed: ‎1 RPM


Manufacturer: ‎‎Western Digital Technologies, Inc.


Language: ‎English, English, English, English, English


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎September 19, 2018


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Mar 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Fast Backup
Color: Silver Capacity: 5TB Style: Mac
I was using a WD 1T Passport with the original USB connection from practically the dark ages and it was performing so slowly, taking hours to back up. I finally bought this 5T model and it backs up in bare minutes. It plugs directly into my MacBook Pro with USB C. No complaints, it works seamlessly with Time Machine. ... show more
Reviewed in the United States on November 28, 2025 by C. Parker
    • Reliable Quality and Excellent Performance Exactly as Promised
Color: Blue Capacity: 6TB Style: PC
This drive performs flawlessly according to WD's specifications. The 6TB storage capacity provides ample space for all my backup needs, and the transfer speeds are fast and reliable.
Reviewed in the United States on October 27, 2025 by Adriana
    • Massive, Secure Storage in a Sleek Mac-Friendly Design
Color: Silver Capacity: 6TB Style: Mac
The WD 6TB My Passport Ultra for Mac is a high-capacity, portable external hard drive designed for reliable storage and seamless backup. With USB-C and USB 3.1 connectivity, it offers fast transfer speeds and easy plug-and-play use. Built-in backup software, password protection, and ransomware defense keep your files secure, while the sleek silver design complements any Mac setup. Perfect for large media libraries, work documents, or everyday file storage, this drive combines convenience, performance, and peace of mind. I orders the 6TB to consolidate other smaller drives that had been formatted on MSFT so I can organize and delete on my new Mac. Small and quiet! ... show more
Reviewed in the United States on October 14, 2025 by Marc C.
    • Great HDD
Color: Emerald Capacity: 6TB Style: PC/Mac Ready (exFAT)
I ordered the 6TB 20th Anniversary Emerald Edition drive in September and have been using it ever since. I have owned several WD Passport HDDs and have never been disappointed in their performance. I feel certain that as capacities continue to increase, I'll end up buying more in years to come. In spite of my overwhelmingly positive opinion about this HDD, there is one design issue that I find absolutely baffling. The LED is on the same end of the drive as the USB-C jack where the data cable is inserted. To my way of thinking, this is backwards- the data port should be on the rear of the unit and the LED should be on the OPPOSITE end. Having both the LED and USB-C port on the same end means that to have the unit positioned so the LED is visible, you have a cable sticking out and projecting toward you. It's helpful for a number of reasons for any HDD to have an LED- I believe it is an important and necessary design feature. But to see it, you have a cable projecting toward you...this is the nuttiest design I have ever seen and I don't know how it ever entered production with such an awkward feature. ... show more
Reviewed in the United States on November 29, 2025 by Craig Maples
    • 5MB drive in 5TB box with flakey cable – buyer beware! AVOID THIS DRIVE!
Color: Silver Capacity: 5TB Style: Mac
Ordered a 5TB drive, received a 5MB (4.9MB) drive in a box labelled 5 TB. Based on the number of positive reviews for this product, I wrongfully assumed this issue had been resolved. (Shame on Amazon for continuing to market this product.) Spent several minutes using Disk Utility to verify the drive I received only has 4.9MB of storage, NOT the 5TB I purchased for a whopping $179.00+ tax. Complete waste of my time during a work day. Am returning the drive and will be purchasing another SanDisk Professional G-Drive ArmorATD because the Seagate drives I own are unreliable and dismount without notice – usually when I am in the middle of a project, which guarantees all of my changes and new work are lost. For those who are interested, I use Mac compatible, reliable external drives with a decent lifespan and transfer speed. Plug and play is a plus, not a must. I will re-format exFAT drives like the SanDisk Pro G-Drive ArmorADT. Functional cable that comes with the drive is also a must. Western Digital is notorious for shipping drives with defective cables. I decided to give this drive a try based on positive reviews posted by Amazon purchasers and a review in MacWorld (they certainly missed the mark). This product was a complete waste of my time and money. Don't be duped! Save your money and skip this external drive. If you want a great reliable external drive with a good transfer speed (that doesn't significantly degrade as the drive fills) and good lifespan (mine are 5 yrs and counting), buy the SanDisk Professional G-Drive ArmorATD. The G-Drive is a bit spendy, but they are ruggedized drives, unlike Seagate, the WD My Passport Ultra and many other brands – and you won't go thru the stupid crap I just experienced with this WD My Passport Ultra drive that only had 4.9MB of storage space. SHEESH ... The SanDisk Pro G-Drive offers VARIETY with 5 drive sizes: 1TB, 2TB, 4TB, 5TB and 6TB. They are RELIABLE and come with a good quality cable (unlike Western Digital). Note: the SanDisk is formatted to exFAT, so you will need to re-format using Disk Utility – but that's a breeze and only takes a few minutes. Save yourself time, hassle and aggravation ... avoid this drive and buy a SanDisk Pro G-Drive ArmorADT. ... show more
Reviewed in the United States on February 17, 2025 by wild irish rose

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...