Seagate
Seagate Storage Expansion Card for Xbox Series X|S (1TB)
Ranked #3 of 3 in Best SSD for PS5 and Xbox Series X
Best for most players
From $155Approximate — prices change and we do not track them in real time
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Key specifications
- Capacity
- 1TB
- Interface
- PCIe Gen4x2 NVMe, proprietary expansion slot
- Sequential read/write
- 7,000 MB/s read, 5,000 MB/s write — matches the console's internal SSD
- Install
- Slots directly into the console's rear expansion port, no tools
Our verdict
Unlike the PS5 side of this guide, there's no DIY option here — a generic external SSD can store Xbox Series X|S games but can't run them at full performance. This is the only real choice for expanding playable storage; the question is just which capacity.
How it scores
Each criterion is scored 0-100 from published specs and lab-tested figures in the sources below, then weighted by the fixed formula this category uses. The weights are the same for every product here.
Speed30% of score
85
Ease Of Setup20% of score
98
Price Value25% of score
70
Capacity Value25% of score
55
Strengths and limitations
Pros
- Plug-and-play — no tools or disassembly, unlike PS5's internal M.2 install
- Matches the Xbox Series X/S internal SSD's speed and Velocity Architecture support exactly
- Officially licensed — the only certified way to play Xbox Series X|S-optimized games from expanded storage
Cons
- Proprietary — this card only works in an Xbox Series X/S, unlike a generic external drive
- 1TB may not be enough alongside GTA VI and an existing library
Where this product appears
Also worth a look
Sources: Windows Central (2024-11-06) · StorageReview (2025-06-24)Last checked by Picksights 2026-07-29