Image: Thomas Bergbold
At a glance
Expert’s Rating
Pros
- High data transfer rate
- Compact dimensions
- MagSafe ring for iPhone
Our Verdict
With the EX400U, Corsair has fulfilled the desire of many media professionals for a compact and powerful external SSD. It combines a small housing with USB4 speed.
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The Corsair EX400U looks like a simple external SSD. It measures 6.4 by 6.4 by 1.2 centimeters and has a plastic housing. Underneath, however, is a MagSafe-compatible ring for attaching to an iPhone. It connects via USB-C and can also be used with a Mac.
We used Ajax System Test Lite to gauge its speed. Its 2709Mbps for writing and 3165Mbps for reading are a convincing performance. In the read/write endurance test, the EX400U slows down by around 300Mbps and the plastic casing also becomes noticeably warm, but not hot.
Corsair states that the 2TB model we reviewed has a 500 TBW rating (the number of terabytes it can write over its lifetime); a value of 500 TBW or more indicates an SSD that is suitable for intensive use in video editing. It has a MFBF (Mean Time Between Failures) of 1.4 million hours. The temperature range in practice even extends to 70 degrees Celsius.
Corsair offers a three-year warranty on the EX400U. A very robust USB4 cable is included.
Should you buy the Corsair EX400U?
With the EX400U, Corsair has fulfilled the desire of many media professionals for a compact and powerful external SSD. It combines a small housing with USB4 speed.
This article originally appeared on our sister publication Macwelt and was translated and localized from German.
Author: Thomas Bergbold, Contributor
Thomas Bergbold is a freelancer for our German sister site Macwelt, for which he has written regularly since 2007. He has been an active Mac user since he came into contact with the Macintosh LC during his studies in the early 1990s. Through Performa and various Power Macintosh G3, G4 and G5, he remained loyal to the Macintosh as a media creator. The trained communications engineer has had a love for high-quality hi-fi devices and music reproduction since his school days. As a photographer and media professional in the creative industry, he relies on Apple products professionally and also enjoys passing on his knowledge in training courses.
