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Black rectangular expansion card with a matte finish and rounded edges, designed for Xbox Series X|S

Seagate

Seagate STJR1000400 1TB portable SSD

SKU CH-ZPX4-TMJ7E MPN STJR1000400

Adds 1TB of peak-performance storage to Xbox Series X or S with identical speed to the internal SSD

  • Total capacity1 TB
  • Setup requirementsXbox Series X or Xbox Series S
  • Product depth2.09 in (5.31 cm)
  • Product colorBlack
  • Key featuresBuilt-in partnership with Xbox to seamlessly match the full
  • Overall width1.24 in (3.15 cm)

Capacity 1TB

  • Plug-in expansion adds 1 TB storage without performance loss
  • Developed with Xbox for identical internal-SSD speed and latency
  • Works with Xbox Velocity Architecture for faster loads and richer worlds
  • Quick Resume switches between multiple titles in seconds
  • Compact card weighs 0.07 lb and measures 1.24" × 2.09" × 0.31

Xbox Series X|S storage expansion

This 1 TB expansion card adds peak-performance storage to the Xbox Series X or Xbox Series S without sacrificing speed. It is built in partnership with Xbox to match the full power of both consoles. The card plugs directly into the dedicated expansion slot for immediate capacity. Gamers who need more space for optimised titles will benefit from the seamless integration.

Xbox Velocity Architecture compatibility

The drive integrates with the Xbox Velocity Architecture to deliver the same load times and gameplay experience as the internal SSD. Games optimised for Xbox Series X run with identical performance from the card. Quick Resume allows switching between multiple titles in seconds from either the internal drive or the expansion card. This compatibility is the single specification that determines whether the part fits the required performance profile.

Plug-and-play console integration

The card requires an Xbox Series X or Xbox Series S with the proprietary expansion slot and no additional cables or power. It arrives with a protective cover and a quick-start guide for instant setup. The compact form factor frees up USB ports that would otherwise be used for external drives. Builders who need storage for a different platform or who lack the dedicated slot cannot use this card.

How it compares

Measured against everything we stock in Portable USB SSDs, at today’s prices. Recalculated every night.

Price $168.99
Cheaper than about 58% of the 410 comparable items (median $202.99).
Total capacity 1 TB
Typical for this category: the median of 311 items is 1 TB.
Price per TB $168.99 per TB
Pricier than about 64% of the 310 comparable items (median $142.00 per TB).

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Specifications

Product
Brand nameSeagate
Product lineExpansion
Model nameSTJR1000400
Part number2WNPP1-570
Total capacity1 TB
Product colorBlack
Size & build
Overall width1.24 in (3.15 cm)
Product depth2.09 in (5.31 cm)
Overall height0.31 in (0.79 cm)
Product weight0.07 lb (0.03 kg)
Shipping weight0.36 kg
Package size140 × 76 × 51 mm
In the box
Included itemsSeagate Storage Expansion Card for Xbox Series X|S
Protective Cover
Quick Start Guide

Other versions of this model

2 more in the same range

Questions about this item

How does the 1 TB capacity translate once the card is inserted into an Xbox Series X or S?

The card adds a full terabyte of storage that runs at the same speed as the console's internal SSD, so games load and resume with identical performance whether they sit on the built-in drive or on the expansion card.

What interface does the card use and what does it limit in practice?

It plugs directly into the dedicated expansion slot on the back of the console and is engineered to match the Xbox Velocity Architecture, meaning the interface caps nothing — you get the same peak throughput and quick-resume behaviour as the internal drive.

What are the physical dimensions I need to clear for the card to seat properly?

The card measures 1.24 inches wide by 2.09 inches deep by 0.31 inches high and weighs 0.07 lb, so it fits flush in the rear slot without protruding beyond the chassis.

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