The Storage Expansion Card for Xbox Series X|S is an optional external solid-state drive (SSD) that adds 2TB, 1TB, or 512GB of lightning fast storage to your Xbox Series X|S console. The Storage Expansion Card performs identically to the console’s internal SSD.

Traditional USB external hard drives don't hit the mark, which saw Microsoft and Seagate cook up a custom "Storage Expansion Card." In short, it's a proprietary, high-speed SSD that's guaranteed to meet the standards for Xbox Series X and Series S. The Xbox Expansion Card makes it simple, with three sizes available.

The Storage Expansion Card performs identically to the console's internal SSD. Not only can you play Optimised for Xbox Series X|S games on it, but thousands of titles across Xbox One, Xbox 360 and Original Xbox will show immediate improvements when installed to it (e.g. faster load times).