Easter 1 Day Sale

Stores closed today.

Shop the sale ›

Today only. Online only.

WD - My Book Duo 4TB External Thunderbolt Hard Drive - Silver

Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

$418.99
On Sale
Save $81 (Reg. $499.99)
Free Shipping
Hard Drive Capacity:
Special Offers

Ratings & Reviews

Overall Customer Rating:
0% of customers would recommend this product to a friend (0 out of 1)

0%
(0 Reviews)
0%
(0 Reviews)
0%
(0 Reviews)
0%
(0 Reviews)
100%
(1 Review)
This WD My Book Duo hard drive features data transfer rates up to 10 Gbps to help you update files quickly. The 2 Thunderbolt ports enable high-speed multitasking, and the 4TB storage capacity provides ample room for music, movies and more.

Product Features

4TB storage capacity

Provides ample storage space for your music, movies and other files.

Thunderbolt interface

With 2 ports offers high-speed multitasking.

Data transfer rates up to 10 Gbps

For quick response when updating files.

Multiple data management options

Use the default performance mode (RAID 0) for rapid data transfers and maximum capacity. With safe mode (RAID 1), half the capacity is used to store your data, and the other half is used for a duplicate copy.

Also suitable for formatting in JBOD, allowing you to use the drives individually.

True hardware RAID

Provides an independent CPU to manage RAID volumes and maximize bandwidth, helping to reduce bottlenecks and improve data throughput.

Product images, including color, may differ from actual product appearance.