Seagate

Seagate Storage Expansion Card for Xbox Series X|S, 1TB, SSD, NVMe Expansion SSD (STJR1000400)

Name: Seagate Storage Expansion Card for Xbox Series X|S, 1TB, SSD, NVMe Expansion SSD (STJR1000400)
Brand: Seagate
SKU: B08K48F6QZ
Price: 127.99 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-06

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$127.99

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View Current Price on Amazon → Compare to similar external storage

*Price sourced from Amazon.com. Last updated 2026-08-17. Price and availability subject to change.

Bottom line: The Seagate 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 $127.99. Compare close alternatives before committing.

The Seagate Storage Expansion Card for Xbox Series X|S adds 1TB of NVMe SSD capacity that behaves exactly like your console's internal drive. Built in partnership with Xbox and matched to the Xbox Velocity Architecture, it runs Series X|S titles straight off the card with no drop in graphics, latency, load times, or framerate — something no USB external drive can do, since those can only store next-gen games, not run them. Quick Resume works across both drives, so you can jump between multiple suspended titles in seconds regardless of where they live. Installation is a single push into the…

SpecPicks Verdict

SpecPicks scored Seagate Storage Expansion Card for Xbox Series X|S, 1TB, SSD, NVMe… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the external storage category. Seagate's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.

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 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
Number of Items	1
Special Feature	Portable
Hardware Platform	Xbox Series X
Installation Type	External Hard Drive
Compatible Devices	Gaming Console
Data Transfer Rate	550 megabits_per_second

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.

View Current Price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-08-17. Price and availability subject to change.