The SSD Review clocked the Corsair EX400U at up to 4GB/s read on Thunderbolt 5 systems while warning that motherboard implementations often limit USB4 speeds. PCMag's Tony Hoffman singled out the unusual magnetic Magsafe connector, which lets the drive attach securely to metal surfaces such as the Corsair 6500x case. Phison controllers and KIOXIA memory earned praise for build quality, though reviewers repeated the caveat: without USB4 support on the host device, expect significant speed bottlenecks. Buy it for a high-end USB4/Thunderbolt setup where secure physical attachment matters, not for a machine with standard USB 3.2 ports.
- — Achieves up to 4GB/s read and 3.6GB/s write speeds on compatible USB4/Thunderbolt 4 systems
- — Features a unique magnetic Magsafe connector for secure attachment to metal surfaces
- — Performance drops significantly to 2GB/s on USB 3.2 ports and 1GB/s on lower-speed connections
- — Not waterproof despite being shock resistant
▾Why it's ranked here
The SSD Review clocked the Corsair EX400U at up to 4GB/s read on Thunderbolt 5 systems while warning that motherboard implementations often limit USB4 speeds. PCMag's Tony Hoffman singled out the unusual magnetic Magsafe connector, which lets the drive attach securely to metal surfaces such as the Corsair 6500x case. Phison controllers and KIOXIA memory earned praise for build quality, though reviewers repeated the caveat: without USB4 support on the host device, expect significant speed bottlenecks. Buy it for a high-end USB4/Thunderbolt setup where secure physical attachment matters, not for a machine with standard USB 3.2 ports.
- — Achieves up to 4GB/s read and 3.6GB/s write speeds on compatible USB4/Thunderbolt 4 systems
- — Features a unique magnetic Magsafe connector for secure attachment to metal surfaces
- — Performance drops significantly to 2GB/s on USB 3.2 ports and 1GB/s on lower-speed connections
- — Not waterproof despite being shock resistant
