1TB Xbox Series X|S expansion cards
Nintendo Switch 2 and Xbox storage, ranked by value on Amazon.co.uk
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A 1TB expansion card roughly doubles a Series X's storage and triples a 512GB Series S's. Unlike the PS5, the Xbox Series X|S does not take a standard M.2 drive: it uses a plug-in expansion card. Cheapest today: Septpenta Cf To SSD M2 NVME Expansion Card at £58.99 (£58.99/TB), as of 21 October 2026.
The detail
Two makers sell official cards: Seagate and WD_BLACK, whose card is the C50. Both plug into the dedicated slot on the back of the console.
The alternative, a USB drive, will hold Series X|S games but not run them. It does run backward-compatible Xbox One, 360 and original Xbox games.
Live prices right now
Related comparisons and guides
See also Xbox Series X|S storage, Seagate card vs WD C50, WD_BLACK C50, Xbox card 2TB.
Other places to go from here: Switch 2 microSD Express, Switch 2 internal storage, Old microSD in a Switch 2?, 2TB, All guides.
Frequently asked questions
How many games fit on a 1TB Xbox expansion card?
About 13 at an average of 75GB per big game.
What is the cheapest option on this page today?
Cheapest today: Septpenta Cf To SSD M2 NVME Expansion Card at £58.99 (£58.99/TB), as of 21 October 2026.
Can I use a PS5 SSD in an Xbox Series X?
No. The Xbox uses a proprietary plug-in card. A standard M.2 SSD cannot be fitted without an unofficial adapter, which we do not list.
Does the expansion card match the internal drive's speed?
Yes. The official cards are designed to match the console's internal storage, so games run from them directly.
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Last updated: 2026-10-21 06:04:07 UTC. As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date indicated on Amazon.co.uk and are subject to change. Any price displayed at the time of purchase will apply. CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON SERVICES LLC. THIS CONTENT IS PROVIDED AS IS AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.