Corsair EX400U Review: The MagSafe SSD for iPhone Videographers! (2026)

Corsair EX400U: A Compact, High-Performance External SSD with MagSafe Connector

The Corsair EX400U is a pocket-sized external SSD that offers both USB4 and Thunderbolt 4 connectivity, making it a versatile and powerful storage solution. With a starting price of $119.99 for 1TB and $189.99 for the 2TB model, it's a cost-effective option for those seeking high-performance storage on the go. The drive's MagSafe connector allows you to attach it to the back of a smartphone, providing a convenient way to transfer files and record video directly to the drive, freeing up your phone's storage space.

Design: A Phone-Mountable SSD

The EX400U boasts a simple yet dense design, featuring a square chassis with rounded corners and a matte silver-gray finish. Its compact dimensions of 0.5 by 2.5 by 2.5 inches (HWD) and lightweight 3.2-ounce build make it easy to carry around. The Corsair logo adds a touch of style to the top of the drive.

A unique feature of the EX400U is its MagSafe connector, which sets it apart from other SSDs. This connector allows you to attach the drive to compatible devices, such as the Apple iPhone 15 or later, providing a convenient way to transfer content and record video directly to the drive. This feature is similar to the PCMag Editors' Choice Lexar Professional Go Portable SSD With Hub, but the EX400U offers a more streamlined approach with faster speeds and higher capacities.

Performance and Connectivity

The EX400U's USB Type-C port supports USB4 or Thunderbolt 4, ensuring fast data transfer rates. It comes with a 40Gbps USB-C cable, providing ample connectivity options. The drive is available in 1TB, 2TB, and 4TB capacities, making it suitable for various storage needs.

Performance-wise, the EX400U excels. It achieved impressive scores in benchmark tests, including Crystal DiskMark, PCMark 10, 3DMark, and Blackmagic's Disk Speed Test. The drive's sequential read and write speeds were on par with the LaCie Rugged SSD4, another USB4 SSD in our comparison group. In everyday tasks, the EX400U performed slightly behind the LaCie Rugged SSD4 and Rugged SSD Pro5, but it outperformed all USB 3.2 Gen 2x2 units.

Warranty and Software

Corsair provides a three-year warranty on the EX400U, ensuring peace of mind for users. The drive comes with the Corsair SSD Toolbox software, offering drive-control options such as secure erase and firmware updates. This software enhances the overall user experience and ensures the drive's longevity.

In summary, the Corsair EX400U is a powerful and compact external SSD with a unique MagSafe connector. Its high-performance capabilities, versatile connectivity, and cost-effectiveness make it an excellent choice for those seeking a reliable and portable storage solution.

Corsair EX400U Review: The MagSafe SSD for iPhone Videographers! (2026)
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