WD My Passport 4TB 2.5 USB 3.0 Portable External Hard Drive (WDBYFT0040BBK-WESN) - Black

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Model Number: WDBYFT0040BBK-WESN
Web Code: 10482134


Security, performance, and capacity combine in the WD My Passport external hard drive. Boasting a 4TB capacity, it transfers files at lightning-fast USB 3.0 speeds and offers the option to set up a password as an added security measure to keep your precious files safe. Included WD Backup software lets you schedule automatic backups.


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  • External hard drive boasts a hefty 4TB capacity, making it a perfect on-the-go storage solution for carrying multimedia files and important documents
  • Optional password can be set up to activate a 256-bit AES hardware-based encryption, adding an extra layer of security for your private files and personal data
  • Transfer files at blazing-fast USB 3.0 speeds, up to 5Gb/s, so you spend less time waiting and more time getting stuff done
  • Also compatible with USB 2.0 that offers up to 480Mb/s
  • WD Backup software lets you schedule automatic backups, so you've got peace of mind knowing you have a duplicate copy of your most important files
  • Portable design allows you to take your important and frequently used files with you without the need for a bulky power supply
  • Compatible with Windows 7/8/10 operating systems, requires reformatting for other operating systems
Portable/ Desktop
4 TB
Drive Type
External Portable Hard Drive
Diskless or Populated
USB 3.0; USB 2.0
Drive Size
2.5 Inches
Internal or External
PC/Mac Compatibility
Software Included
WD Back Up; WD Security; WD Drive Utilities Software
Maximum Data Transfer Rate
480 MB/s
System Requirements
Windows 10; Windows 8; Windows 7 Operating Systems; Requires Reformatting For Other Operating Systems


Dimensions (cm)
11 (W) x 2.15 (H) x 8.15 (D) cm
Dimensions (in)
4.33 (W) x 0.85 (H) x 3.21 (D) in
Product Weight
250 g
  • Portable hard drive
  • USB 3.0 cable
  • WD Backup, WD Security, and WD Drive Utilities Software
  • Quick install guide

  • Great Product

    from Montreal on June 3, 2019

    It’s light, compact and the data transfer is quick. The WD Discovery running in the background was annoying and slowing down my computer so I ended up disabling it. Apart from that I am very pleased with the product. It’s definitely worth getting!

  • Good product

    from Toronto, ON on April 9, 2017

    Simple to use and no need for separate power source. Very convenient to use as a back up or second storage drive.

  • Great so far.

    from Nanaimo, BC on February 19, 2017

    I use this drive to backup my 4TB NAS. I haven't had any issues so far. It's fast, light and small. I would recommend this drive.

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