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Black rectangular desktop hard drive with USB 3.0 Micro-B port and AC adapter

Western Digital

Western Digital WDBBGB0040HBK-NESN 4TB external hard drive

SKU CH-W45K-9MNSC MPN WDBBGB0040HBK-NESN

A 4 TB desktop drive with USB 3.0, backup software, Time Machine support and 256-bit AES hardware encryption

  • Total capacity4 TB
  • Interface typeUSB 3.0, Micro-B
  • Setup requirementsFormatted exFAT for out-of-the-box compatibility with Window
  • Product colorBlack
  • Key featuresComplete Backup Equipped with backup software for Windows an
  • Product dimensions6.73 in × 1.93 in × 5.47 in

Capacity 4TB

  • 4TB capacity stores massive photo, video and document libraries
  • USB 3.0 interface transfers files at 5Gbps SuperSpeed
  • 256-bit AES hardware encryption with password protection secures data
  • WD Backup software for Windows and Time Machine for Mac automate backups
  • Compact 6.73 x 1.93 x 5.47 inch design fits any desktop

Desktop storage for Windows and Mac users

The Western Digital My Book 4TB desktop external hard drive connects through a USB 3.0 Micro-B port and is formatted exFAT for immediate use with Windows 10+ and macOS 11+. It ships with WD backup software for Windows and works with Apple Time Machine on Mac. A 256-bit AES hardware encryption option protects files with a personal password. The drive is suited for users who want a single, high-capacity volume for photos, videos, music and documents.

Check your host ports and power

Verify that your computer has a free USB-A port for the included SuperSpeed USB-A cable rated at 5Gbps; the drive is backward compatible with USB 2.0 but will run slower. An AC adapter is required, so confirm you have a nearby mains outlet. The drive arrives formatted exFAT; if you use an older operating system or a different file system, you will need to reformat it. No internal drive bay or PCIe slot is involved.

Compact enclosure with hardware encryption

The black enclosure measures 6.73" x 1.93" x 5.47" and weighs 2.21 lbs, fitting on a desk without occupying much space. A USB 3.0 Micro-B connector on the rear accepts the supplied cable, and the separate power brick keeps the unit running. Built-in 256-bit AES hardware encryption works with WD Security software for password protection. WD Discovery software adds drive utilities and cloud import features. The package includes the drive, cable, AC adapter and quick install guide.

How it compares

Measured against everything we stock in High-Capacity External Drives, at today’s prices. Recalculated every night.

Price $193.99
Cheaper than about 79% of the 144 comparable items (median $379.99).
Total capacity 4 TB
Lower than about 90% of the 101 comparable items (median 12 TB).
Price per TB $48.50 per TB
Pricier than about 74% of the 101 comparable items (median $37.00 per TB).

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Specifications

Product
Brand nameWD
Product lineMy Book
Model nameWDBBGB0040HBK-NESN
Total capacity4 TB
Product colorBlack
Ports & slots
Interface typeUSB 3.0, Micro-B
Size & build
Product dimensions6.73 in × 1.93 in × 5.47 in
Product weight2.21 lb (1 kg)
Shipping weight1.45 kg
Package size231 × 208 × 91 mm
In the box
In the boxDesktop hard drive
SuperSpeed USB-A cable (5 Gbit/s)
AC adapter
Software for device management and backup with password protection
Quick install guide

Other versions of this model

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Questions about this item

What cables and accessories are included with the 4 TB My Book drive?

The box contains the desktop hard drive, a SuperSpeed USB-A cable rated for 5 Gbps, an AC power adapter, software for device management and backup with password protection, and a quick install guide.

Which interface should I use for the fastest transfer speed on this 4 TB model?

Connect the drive via its USB 3.0 Micro-B port with the supplied SuperSpeed USB-A cable to reach the 5 Gbps link speed; the drive also works with USB 2.0 ports at lower speed.

How does the 5 Gbps USB 3.0 interface affect real-world backup performance on this drive?

The 5 Gbps link lets the drive stream large photo, video and document libraries at the full speed of the internal mechanical disks, so scheduled backups with the included software or Time Machine complete in the shortest time the drive hardware allows.

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