SanDisk® brand 400GB card gives mobile consumers the freedom to capture and experience more content than ever before

BERLIN, August 31, 2017 – Western Digital Corporation (NASDAQ: WDC), a global data storage technology and solutions leader, today announced its 400GB* SanDisk Ultra® microSDXC™ UHS-I card, the world’s highest-capacity microSD card for use in mobile devices. Two years after introducing its record-breaking 200GB* SanDisk Ultra microSDXC card, Western Digital has doubled the capacity within the same tiny form factor. Keeping up with the demands of today’s mobile-centric lifestyle, the new SanDisk microSD card provides consumers with the freedom to capture, save and share photos, videos and apps, and enjoy offline content - all without worrying about storage limitations.

“Mobile devices have become the epicenter of our lives, and consumers are now accustomed to using their smartphones for anything from entertainment to business. We are collecting and sharing massive amounts of data on smartphones, drones, tablets, PCs, laptops and more. We anticipate that storage needs will only continue to grow as people continue to expect more sophisticated features on their devices and desire higher quality content,” Jeff Janukowicz, research vice president, IDC. “We estimate mobile device users worldwide will install over 150 billion applications alone this year, which require a ton of memory on all of our favorite devices.”

Western Digital achieved this capacity breakthrough by leveraging its proprietary memory technology and design and production processes that allow for more bits per die.

“We continue to push technology boundaries and transform the way consumers use their mobile devices,” said Sven Rathjen, vice president, product marketing, Western Digital. “By focusing on achieving new technology milestones, we enable consumers to keep up with their mobile-centric lifestyles with storage solutions they trust.”

Ideal for Android™ smartphone and tablet users, the world’s highest-capacity card can hold up to 40 hours of Full HD video and features superfast transfer speeds of up to 100MB/s** to deliver premium performance. At this transfer speed, consumers can expect to move up to 1,200 photos per minute1. Additionally, the 400GB* SanDisk Ultra microSD card meets the A1 App Performance Class specification, which means that the card can load apps faster.2

Through the updated SanDisk Memory Zone app, users will have even greater control over their mobile device's memory storage. The app, available for free download from the Google Play™ store, is compatible with most Android-powered devices and allows users to easily locate, organize, transfer and back up data, including tagged content from Facebook and Instagram.3

Pricing and Availability

The ground-breaking 400GB* SanDisk Ultra microSDXC UHS-I card features a ten-year limited warranty4 and will be available at SanDisk.com and other major retailers at a U.S. manufacturer’s suggested retail price (MSRP) of $249.99.

­­­­­­­­­­About Western Digital

Western Digital Corporation (NASDAQ: WDC) is an industry-leading provider of storage technologies and solutions that enable people to create, leverage, experience and preserve data. The company addresses ever-changing market needs by providing a full portfolio of compelling, high-quality storage solutions with customer-focused innovation, high efficiency, flexibility and speed. Our products are marketed under the HGST, SanDisk and WD brands to OEMs, distributors, resellers, cloud infrastructure providers and consumers. For more information, please visit www.hgst.com, www.wd.com, and www.sandisk.com.

About SanDisk

SanDisk, a Western Digital Corporation brand, provides trusted and innovative flash storage products that have transformed the electronics industry. SanDisk’s quality, state-of-the-art solutions are at the heart of many of the world's largest data centers, and embedded in advanced smartphones, tablets and PCs. SanDisk’s consumer products are available at hundreds of thousands of retail stores worldwide.

Forward-Looking Statements

This news release includes forward-looking statements, including the expected availability and performance of the SanDisk Ultra microSDXC UHS-I card and its features, availability, and their benefits to customers. There are a number of risks and uncertainties that may cause these forward-looking statements to be inaccurate including, among others: volatility in global economic conditions; business conditions and growth in the storage ecosystem; impact of competitive products and pricing; market acceptance and cost of commodity materials and specialized product components; actions by competitors; unexpected advances in competing technologies; our development and introduction of products based on new technologies and expansion into new data storage markets; risks associated with acquisitions, mergers and joint ventures; difficulties or delays in manufacturing; and other risks and uncertainties listed in the company's filings with the Securities and Exchange Commission (the "SEC"), including our most recently filed periodic report to which your attention is directed. We do not intend to update the information contained in this release.

* 1GB = 1,000,000,000 bytes. Actual user storage less.

** Up to 100MB/s read speed; write speed lower. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.

1 Based on 4.1GB transfer of photos (avg. file 3.5MB) with USB 3.0 reader. Results may vary based on host device, file attributes and other factors.

2 Results may vary based on host device, app type and other factors.

3 Social media account registration may be required. Social media services may be changed, terminated or interrupted at any time and may vary by country.

4 See www.sandisk.com/wug.

©2017 Western Digital Corporation or its affiliates. All rights reserved.

Western Digital, SanDisk, the SanDisk logo, and SanDisk Ultra are registered trademarks or trademarks of Western Digital Corporation or its affiliates in the US and/or other countries. Android and Google Play are trademarks of Google Inc. All other marks are the property of their respective owners.

Western Digital Technologies, Inc. is the seller of record and licensee in the Americas of SanDisk® products.