Seagate STJR1000400 1TB Expansion Card for Xbox

The Seagate STJR1000400 1TB Expansion Card is the officially licensed storage solution designed in direct partnership with Xbox for the Series X and Series S consoles. Unlike standard USB external drives that can only store and play last-gen titles, this expansion card plugs into the proprietary Storage Expansion port on the back of the console and delivers the same NVMe performance as the internal SSD. That means Xbox Velocity Architecture games — including titles optimized specifically for Series X|S — load, render, and perform identically whether installed on the internal drive or on this card.

With 1TB of additional capacity, the card roughly doubles the usable game storage on a Series S and adds meaningful breathing room to the Series X. Installation is completely tool-free: the card slides into the rear port and is immediately recognized by the system. Quick Resume, instant switching between suspended games, works seamlessly across both drives. For players who prefer to keep a large library installed and ready to go rather than repeatedly downloading and deleting titles, the STJR1000400 is currently the only expansion option that preserves the full next-gen experience.