
Corsair EX400U 4TB Portable External Type-C SSD –, USB 3.2 Gen2 2x2 Connections, Up to 40Gbps, Plug and Play, MagSafe, Includes USB-C to USB-C Cable – Windows PC, iOS Mac – Grey is priced at £650.54 — stable over the last 30 days.
Price last checked: 20 Apr 2026, 04:43
The Corsair EX400U 4TB Portable External Type-C SSD is a compact, 2.5-inch external drive with a capacity of 4TB, offering fast data transfer speeds of up to 4,000MB/sec sequential read and 3,600MB/sec sequential write. It features a USB 3.2 Gen2 2x2 connection, providing up to 40Gbps bandwidth, and is compatible with USB Type-C, Thunderbolt 4, and higher connections. This external SSD is suitable for users who require high-performance storage on the go, such as video and photo editors who ne...

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Explains how to compare SSD endurance (TBW/DWPD), warranty terms, controller/DRAM design, and real-world performance metrics like sustained writes after SLC cache, 4K QD1 latency, and thermals.
NVMe vs SATA, TLC vs QLC, DRAM cache — cut through the jargon and pick the best SSD for your PC build or upgrade.