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WD 18TB My Book external hard drive, Desktop HDD with Password Protection, USB 3.0, SuperSpeed USB, software for device management, backup, hardware encryption, works with PC and Mac, Black
Western Digital

Western Digital WD 18TB My Book external hard drive

Bottom line: The Western Digital WD 18TB My Book external hard drive ($889.08 on Amazon as of 2026-10-20 20:16 UTC): 18TB in a single desktop enclosure - no multi-drive juggling; main trade-off: needs external AC power, so it is not a travel or laptop-bag drive.

$889.08

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Buy on Amazon — $889.08 Compare to similar external storage

By , Founder & Editor-in-Chief · Listing data updated

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.

*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 18TB in a single desktop enclosure - no multi-drive juggling
  • ✓ 256-bit AES hardware encryption with password protection built in
  • ✓ Works with Windows and Mac out of the box, no reformatting needed
  • ✓ Backup software runs on a schedule you set; Time Machine also supported

Cons

  • ✗ Needs external AC power, so it is not a travel or laptop-bag drive
  • ✗ USB 3.0 at 5 Gbps, not the faster USB 3.2 Gen 2 or Thunderbolt
  • ✗ Spinning HDD, so seek and transfer speeds trail any SSD
  • ✗ Single drive means no built-in redundancy - still need a second copy

Manufacturer description

Store nearly two decades of photo libraries, 4K project files, and full system images on the WD 18TB My Book, a desktop external hard drive built by Western Digital for people who have outgrown portable storage. The drive arrives formatted and ready for Windows and Mac, so you can connect the included USB 3.0 cable and start moving files without reformatting or hunting for drivers. SuperSpeed USB 3.0 delivers up to 5 Gbps of bandwidth, and the interface stays backward compatible with USB 2.0 ports on older machines. Security is handled in hardware rather than bolted on afterward: built-in…

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SpecPicks Verdict

SpecPicks scored Western Digital WD 18TB My Book 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 18TB My Book work with a Mac without reformatting?

Yes. The My Book is ready to use with Mac and Windows right out of the box, and it works with Time Machine as well as the included WD backup software.

How does the password protection actually work?

The drive has built-in 256-bit AES hardware encryption. You set your own password through the included software, and you can enable auto-unlock so a trusted computer mounts the drive without retyping it.

How fast is the connection?

It uses SuperSpeed USB 3.0 rated at 5 Gbps, and it remains compatible with USB 2.0 ports if you connect it to an older system.

Is 18TB the largest size available?

18TB is the top capacity in this My Book line. Smaller capacities are offered in the same enclosure, so check the listing for the size options currently in stock.

Key Features

  • The My Book drive is trusted desktop storage designed to complement your personal style with a massive amount of space to store your photos, videos, music, and documents. Equipped with password protection and perfectly paired with backup software, My Book desktop storage helps keep your files safe.
  • Easy to Use. Ready to use with Mac and Windows computers right out of the box, so you can start transferring files, saving your memories, and backing up right away. It also comes with all the software you need to help protect your data.
  • Complete Backup. My Book desktop storage comes equipped with backup software to help make sure your photos, videos, music, and documents don’t get lost. You can set it to run automatically to your schedule. Just pick the time and frequency to back up important files from your system. With the power of the included backup software, you’ve got complete backup routine options to help recover data in the event of a computer virus or computer failure, or if you accidentally press “delete”.
  • Password Protection with Hardware Encryption. The My Book drive’s built-in 256-bit AES hardware encryption with password protection helps keep your content private and safe. Just activate password protection and set your own personalized password using the included software. For quick, convenient access you can set to automatically unlock the drive on your computer, saving you the hassle of keying in your password every time.
  • Massive capacity, Available in capacities up to 18TB, there's plenty of room to save the massive amounts of photos, videos, and music you love, plus your important documents.
  • SuperSpeed USB 3.0, (5 Gbps); USB 2.0 compatible

Full Specifications

BrandWestern Digital
Colorblack
Model NameWD My Book
Read Speed625 megabytes_per_second
Unit Count1 Count
Form FactorPortable
Media Speed1
ConnectivityUSB
Model NumberWDBBGB0180HBK-EESN
CompatibilityPC, Mac
Built-In MediaAC adapter, Desktop hard drive,USB 3.0 cable, Quick Start Guide, WD Discovery™ software†† for backup, security and drive utilities
Hard Disk Size18 TB
Hard-Drive Size18 TB
Mfr Part NumberWDBBGB0180HBK-EESN
Number of Items1
Special FeatureHardware Encryption
Hardware PlatformPC
Installation TypeExternal Hard Drive
Compatible DevicesWindows 10+ macOS 11+
Data Transfer Rate480 megabits_per_second
Full listing titleWD 18TB My Book external hard drive, Desktop HDD with Password Protection, USB 3.0, SuperSpeed USB, software for device management, backup, hardware encryption, works with PC and Mac, Black

Ready to buy?

WD 18TB My Book external hard drive, Desktop HDD with Password Protection, USB 3.0, SuperSpeed USB, software for device management, backup, hardware encryption, works with PC and Mac, Black is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $889.08

*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.

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WD 18TB My Book external hard drive, Desktop HDD with Password Protection, USB 3.0, SuperSpeed USB, software for device management, backup, hardware encryption, works with PC and Mac, Black
$889.08
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