Seagate
Storage Expansion Card for Xbox Series X|S, 1TB, SSD, NVMe Expansion SSD (STJR1000400)
*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.
Bottom line: The Storage Expansion Card for Xbox Series X|S, 1TB, SSD, NVMe Expansion SSD (STJR1000400) is a niche pick — read recent reviews before buying in the external storage category, priced around $160.25. Read recent reviews carefully before committing.
Instantly expand the next generation peak speed and performance capacity of Xbox Series X|S with the custom-engineered Seagate Storage Expansion Card. Effortlessly compatible with the Xbox Velocity Architecture, experience the fastest load times and most dynamic worlds — even improving the overall performance of thousands of Original Xbox, Xbox 360 and Xbox One games. The ultimate power, speed, and compatibility is now at your fingertips.
SpecPicks Verdict
SpecPicks classifies Seagate Storage Expansion Card for Xbox Series X|S, 1TB, SSD, NVMe… as a niche pick — read recent reviews before buying in the external storage category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. Seagate's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ WARRANTY Enjoy long-term peace of mind with the included 3-year limited warranty
- ✓ Backed by Seagate's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- SEAMLESS GAMEPLAY Designed in partnership with Xbox to seamlessly play Xbox Series X|S games from the internal SSD or the expansion card without sacrificing graphics, latency, load times or framerates
- HIGH CAPACITY 1 TB of storage increases the overall capacity of the Xbox Series X|S — collect thousands of games across four generations of Xbox without sacrificing performance
- DESIGNED FOR XBOX Providing faster load times, richer environments and more immersive gameplay
- QUICK RESUME Switch between multiple titles in seconds — directly from the internal SSD or the expansion card
- WARRANTY Enjoy long-term peace of mind with the included 3-year limited warranty
Full Specifications
| Brand | Seagate |
|---|---|
| Color | Grey |
| Item Width | 31.6 Millimeters |
| Model Name | Seagate Expansion Card |
| Read Speed | 300 Megabytes Per Second |
| Unit Count | 1.0 Count |
| Form Factor | Portable |
| Item Length | 7.8 Millimeters |
| Media Speed | 3000 MB/s |
| Model Number | STJR1000400 |
| Compatibility | Xbox, Switch |
| Built-In Media | SSD 1TB Expansion Card for Xbox X/S SSD |
| Hard-Drive Size | 1 TB |
| Mfr Part Number | STJR1000400 |
Ready to buy?
Seagate Storage Expansion Card for Xbox Series X|S, 1TB, SSD, NVMe Expansion SSD (STJR1000400) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.
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