
Seagate Storage Expansion Card 1TB
Score: 69/100
Fanxiang S101
Score: 62/100Rankings

The Seagate Storage Expansion Card for Xbox Series X|S adds up to 4 TB of native-speed storage via a PCIe Gen4 x4 NVMe interface. Its performance is slightly lower than the theoretical maximum and it works only with the Xbox Series X|S ecosystem. Best for gamers who need seamless expansion without cables.

The Fanxiang S101 1TB SATA SSD offers an affordable upgrade path for older laptops and desktops, delivering up to 550 MB/s read speeds with reliable TLC NAND. Its limitations include the SATA III bandwidth ceiling and lack of advanced features such as DRAM cache or hardware encryption. It is best suited for budget-conscious users needing a simple storage boost on legacy systems.
| Attribute | ![]() | ![]() |
|---|---|---|
1,024 GBbest | 1,000 GB | |
820 MB/sbest | 550 MB/s | |
664 MB/sbest | — | |
30,219 IOPSbest | — | |
684 IOPSbest | — | |
128 MBbest | — | |
3 years | 5 yearsbest | |
| ↓ lower better | 30 gbest | 45.4 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Connectivity(1) | ||
Interface | PCIe Gen4 x4 NVMe | SATA III |
Performance(2) | ||
Sequential Read Speed (MB/s) | 820 MB/s | 550 MB/s |
Sequential Write Speed (MB/s) | 664 MB/s | 470-520 MB/s |
Storage(1) | ||
Storage Capacity (GB) | 1024 GB | 1000 GB |
General(1) | ||
Warranty (years) | 3 years | 5 years |
Design & Build(3) | ||
Form Factor | Proprietary Card | 2.5" |
Weight (g) | 30 g | 45.4 g |
Dimensions (L×W×H) (mm) | 80x23.4x8.9 mm | 100×69×7 mm mm |

Products in the top-left offer the best value (high score, low price).

Professional reviewers praise the Seagate Expansion Card as the only true plug-and-play solution that delivers PCIe Gen4 performance and full Xbox Velocity Architecture integration, matching the console's internal SSD for optimized games. They commend its seamless installation, high capacities, and ability to run next-gen titles without transfers, while noting that real-world speeds fall short of the PCIe Gen4 ceiling and that the product's exclusivity and premium price limit its broader appeal.
Everyday users consistently highlight the card's ease of installation and the immediate boost in available storage, especially for large open-world games. Quick Resume reliability and the compact, cable-free form factor receive strong praise. Recurring concerns revolve around limited capacity on lower-tier models, the inability to use the card on other platforms, and occasional heat during prolonged sessions.

“Matches internal SSD speeds for optimized games, Quick Resume, and load times, delivering near-native performance.”

“Benchmark read speeds (~738 MB/s) are lower than the theoretical maximum of PCIe Gen4, potentially limiting peak performance.”



Professional reviewers consider the S101 a solid, low-cost option for users who need a simple SATA upgrade. While it delivers the expected speed gains over HDDs, its SATA III bandwidth and lack of premium features make it unsuitable for performance-critical workloads, and external use via USB shows markedly lower speeds.