WD My Book 4TB USB 3.0 External Hard Drive (WDBBGB0040HBK-NESN)

Model Number: WDBBGB0040HBK-NESN
Web Code: 10482142


Trust the WD My Book desktop external hard drive is like a digital Fort Knox for your treasured data. Boasting a 4TB capacity, this desktop drive transfers files at lightning-fast USB 3.0 speeds and offers an optional password as added security, ensuring your files are safe. It works out of the box with your Windows and Mac devices.
Sold and shipped by Best Buy
Available online
Reserve & Pick Up

This product is currently unavailable for Reserve & Pick Up at nearby stores.

Geek Squad Protection Replacement Plan
See Benefits

No Plan


2 Years


3 Years


  • Formatted exFAT for out-of-the-box compatibility with Windows and Mac operating systems (Windows 10, 8, or 7; Mac OS X El Capitan, Yosemite, or Mavericks)
  • Desktop storage device boasts a hefty 4TB capacity, making it a perfect solution for storing all of your multimedia files and important documents
  • 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
  • Compatible with Apple Time Machine, allowing you to schedule regular backups of your files
  • 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
  • Formatted exFAT for out-of-the-box compatibility with Windows and Mac. Operating System: Windows 10/8/7, Mac OS X El Capitan, Yosemite or Mavericks. May require reformatting for other operating systems. Compatibility may vary depending on user’s hardware configuration and operating system
Portable/ Desktop
4 TB
Drive Type
External Desktop Hard Drive
Diskless or Populated
USB 3.0; USB 2.0
Internal or External
PC/Mac Compatibility
Software Included
WD Back Up; WD Security; W Drive Utilities Software
Maximum Data Transfer Rate
5000 MB/s
System Requirements
Formatted exFAT for out-of-the-box compatability with Windows and Mac; Operating system Windows 10; Windows 8; Windows 7; Mac OS X El Capitan; Yosemite or Mavericks; May require reformatting for other operating systems


Dimensions (cm)
13.93 (W) x 17.06 (H) x 4.9 (D) cm
Dimensions (in)
5.48 (W) x 6.72 (H) x 1.93 (D) in
Product Weight
1.00 kg
  • Desktop Hard Drive
  • USB 3.0 Cable
  • AC adapter
  • WD Backup WD Security
  • WD Drive Utilities Software
  • Quick Install Guide

  • Been working well so far

    on October 12, 2019

    I got this as a backup-backup for my home computers. It seems to work pretty well and is fast enough over USB 3. Two small complaints though: 1. The USB 3 cable provided is pretty short. Thankfully I had a much longer one already so I could put the My Book on a shelf a couple feet away from the computer instead of having to put it /right next/ to the computer. 2. There are no status lights at all on it so you can't tell if it has power or the disk is being accessed. Small gripe, would be nice to have. I've only had it a couple months so I can't speak for long term reliability, but the price was decent (on sale) and it gives me one more level of backup redundancy to help protect my files. Also, I haven't used the native WD utilities so I can't speak for their usability.

    Review originally posted on bestbuy.com

  • 4th WD drive I've had over time

    on October 12, 2019

    WD does a solid job of creating these little backup drives. This was started up with no problems and has plenty of room for a "backup of the backup" ...redundancy is everything. This was a great value for the money. It "goes to sleep" when you don't need it and runs very quietly when it is active . Plus no annoying bright LED lights like with prior models. Sleek design on this one.

    Review originally posted on bestbuy.com

  • Works fine but conflicts with Time Machine

    on October 4, 2019

    Formatted easily with Mac but the Time Machine constantly reports failures when trying to do backups.

    Review originally posted on bestbuy.com

See helpful questions and answers from shoppers like you.

Check our return policy and you'll find specific return information for your product and steps on how to return in-store or by mail.