WD My Book Duo 4TB USB 3.0 Desktop External HDD

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12 Months Vendor Warranty

$11.95 Delivery on this purchase

WD My Book Duo 4TB USB 3.0 Desktop External HDD

Transfer, save and protect your photos, videos, music and other massive files to free up valuable space on your computers. Featuring blazing-fast transfer speeds, local, cloud and system-level backup options, hardware RAID and password protection, the My Book Duo by WD is the ultimate storage solution offering the capacity and security you need.


Dual-drive performance with up to 290MB/s data transfers

Transfer a full HD movie in just under 20 seconds. With ultra-fast transfer speeds up to 290MB/s, get the speed you need to transfer your entire media collection with ease (Read speeds MB/s for HD video. Performance based on a 4GB DVD movie files. Performance testing by WD resulted in actual transfer rates of 290MB/s on 4-8TB systems. Performance may vary based on operating system and hardware configuration).

Massive capacity to hold all your large media files

My Book Duo is your storage vault. With 4TB of capacity, you can organise and save your entire photo, video and music collection, and other important documents in one safe place.

Complete backup solutions to secure your data from loss

My Book Duo provides multiple backup options to help protect your media collection and important files with local, cloud and system-level backup.

Multiple data management options

Preconfigured in RAID 0 for maximum performance and capacity out-of-the-box or choose RAID 1 for ultimate data protection or JBOD to use the drives individually. True hardware RAID provides an independent CPU to manage RAID volumes and maximise bandwidth for reduced bottlenecks and improved data throughput.

Fast and reliable hardware encryption with password protection

My Book Duo provides 256-bit AES hardware encryption; the most secure data encryption available. My Book Duo also provides password protection to ensure your entire media collection and important files are protected from unauthorised access.

Expand capacity and organise your workspace with two high-speed USB 3.0 ports

My Book Duo features two additional USB expansion ports allowing you to connect additional devices, such as another external drive to increase your storage, or simultaneously charge your smartphones, tablets or other USB devices.

Configure, manage and diagnose your drive with WD Drive Utilities

You're in complete control. With this software you can run drive diagnostics, manage RAID configurations, erase and format your drive, register your drive and more.

Easy to set up, easy to use

My Book Duo is pre-formatted NTFS and is ready to use right out-of-the-box for Windows OS users. The drive can also be easily reformatted for Mac OS X.

Ultra-reliable with WD Red NAS drives

My Book Duo ships with integrated WD Red NAS hard drives, designed and tested for reliability and optimal performance in small RAID environments.

User serviceable enclosure

Ready to upgrade your drives to expand storage capacity? With the simple push of a button, pop open the enclosure and insert new drives with ease. No tools required.


  • Capacity: 4TB (2 x 2TB)
  • Interface: USB 3.0
  • Operating System Compatibility: Formatted NTFS for Windows 8 or higher, Windows 7 or Windows Vista operating system. Requires reformatting for Mac OS X (Compatibility may vary depending on user's hardware configuration and operating systems)
  • System Compatibility:
  • Formatted NTFS for Windows 8, Windows 7, Windows Vista or Windows XP
  • Requires reformatting for Mac OS X
  • Temperature:
  • Operating: 0°C to 35°C
  • Storage: -40°C to 70°C
  • Power: 100-240V AC, 47~63Hz
  • Dimensions: (W) 9.9cm x (D) 9.9cm x (H) 16.5cm
  • Weight: 2.09kg
  • Colour: Black
  • Model: WDBLWE0040JCH-SESN
  • Brand: WD

Please note: This product comes with a manufacturer's 3-year limited warranty

Package Contents

  • 1 x External Premium RAID Storage - 4TB
  • 1 x USB Cable
  • 1 x AC Adapter
  • 1 x Quick Install Guide
  • WD SmartWare Pro, WD Drive Utilities & WD Security Software

GST Note: GST is included in the price of this item. GST is included in the freight.

Customer Reviews

Delivery / Returns


Delivery time frames will depend on your location, please check the shipping calculator to see an estimate of when you can typically expect to receive your goods based on your postcode.

We will send you an email notifying you as soon as your items have left our warehouse. In this email, you will find the name of the courier company and the consignment note number of your item as well as information on tracking the delivery of your item online. Simply follow the link and enter your reference number. You will then be able to quickly and efficiently track the delivery status of your item!

Please Note: Your goods will be delivered to your registered address. We do deliver Australia wide except for a few remote territories, please check the shipping calculator to confirm delivery availability and timeframes.

Returns Policy

At Grays we want you to have a great shopping experience. When you purchase a product from Grays and you find that it’s not what you wanted , contact us within 7 days and you can return it to us - no questions asked!

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