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S91 GEN4X4 NVMe

addlink S91 is a compact M.2 2230 PCIe Gen4 NVMe SSD designed for handheld gaming devices and ultra-compact systems. It delivers fast Gen4 performance (5000MB/s) with efficient power consumption, making it ideal for Steam Deck, Microsoft Surface upgrades, and space-constrained laptops.

PCIe Gen4x4 NVMe Architecture​

​Up to 5,000 MB/s read & 3,200 MB/s write.

10x Faster

than SATA SSD

S91 SSD
SATA SSD

Make sure that your computer has a M.2 slot. According to our inside test by CrystalDiskMark software, read/write speed depend on the device, interface, usage and other factors so that actual performance may be lower. ​ Limited warranty based on 5 years or “Percentage Used” which can be found using CrystalDiskInfo. Please check Warranty Policy for more information.  

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  • Ultra-Compact M.2 2230 Design

Perfect for devices with strict space limitations

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UltraBook / Mini PC

Install Guide

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ROG Ally

Install Guide

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Steam Deck

Install Guide

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HMB + SLC Cache Technology

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  • Utilizes host system memory to accelerate random read/write operations while SLC caching boosts short-burst throughput, resulting in lower latency and improved system responsiveness.

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Efficient Power Design

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  • Optimized power management reduces energy consumption while maintaining consistent performance, making it suitable for laptops requiring a balance of efficiency and sustained throughput.

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High Reliability

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  • LDPC ECC enhances error correction accuracy, ensuring data integrity and long-term stability under intensive workloads.

Multi-Device Versatility

  • Gaming Consoles & Handheld Gaming Devices​：Steam Deck, ROG Ally, MSI Claw (select models supporting M.2 2230 NVMe)

  • Microsoft Surface SSD Upgrades：Supported Surface models requiring M.2 2230 PCIe NVMe drives

  • Ultrabooks & Compact Laptops：Systems with M.2 2230 slots and strict space constraints

  • Mini PCs & Embedded Systems：Compact platforms requiring low-profile, high-efficiency NVMe storage

  • Gen3 SSD Upgrades：Users upgrading from PCIe Gen3 SSDs seeking practical, real-world performance gains

Media Recommendations

addlink S91 M.2 2230 PCIe

" addlink S91 series come in various capacities  will accelerate the performance of portable devices (either gaming or business). The warranty is 5 years on par with other storage manufacturers and we can suggest this product for all users who wish to upgrade their storage, like with our be-loved SteamDeck "

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addlink S91 M.2 2230 PCIe

"Users seeking a high-performance storage solution on a very small form factor interface will find the Addlink S91 2 TB SSD to be a valuable investment though it is pricey. But hey, cramming this much performance ut of something so small, nice."

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商務

addlink S91 M.2 2230 PCIe

" While idle power seems slightly on the high side with 1.3 W, the S91 makes up for that with impressive efficiency scores when transferring data, both in read and write. I feel that the S91 is a good choice, even if battery life is important to you."

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商務

addlink S91 M.2 2230 PCIe

" A review of the NVMe M.2 SSD "Addlink S91 2TB," which can reach 5000MB/s sequential read speeds with a PCIE 4.0x4 connection and is M.2 2230 size, and can also be used as an SSD replacement for ASUS ROG Ally and Steam Deck."

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addlink S91 M.2 2230 PCIe
YouTuber Review: on Steam Deck
addlink S91 M.2 2230 PCIe
YouTuber Review: on Rog Ally

Why Choose the addlink S91?

addlink S91 is a PCIe Gen4 x4 M.2 2230 NVMe SSD designed for gaming consoles and compact systems, delivering fast performance in a small form factor while maintaining efficient power consumption. It is optimized for select Steam Deck models, Microsoft Surface devices, and compact laptops that require a 2230/2242 NVMe SSD.

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Key Features

  • PCIe Gen4 x4 NVMe — Fast, responsive performance for gaming and multitasking

  • M.2 2230 Compact Design — Ideal for consoles, Surface devices, and ultrathin laptops

  • HMB + SLC Cache — Faster random access, lower latency

  • Power Efficient — Sustained performance with reduced energy use

  • High Reliability — LDPC ECC for long-term data stability

  • 5-Year Warranty — Built for lasting confidence

 

Capacity Options

  • 512GB / 1TB / 2TB

 

Ideal For

  • Handheld gaming devices such as Steam Deck and similar platforms

  • Microsoft Surface models requiring M.2 2230 PCIe NVMe SSDs

  • Ultrabooks and compact laptops with strict space limitations

  • Mini PCs and embedded systems needing low-profile NVMe storage

  • Users upgrading from PCIe Gen3 SSDs seeking a practical Gen4 performance boost

*Make sure that your computer has a M.2 slot. According to our inside test by CrystalDiskMark software, read/write speed depend on the device, interface, usage and other factors so that actual performance may be lower. ​** Limited warranty based on 5 years or “Percentage Used” which can be found using CrystalDiskInfo. Please check Warranty Policy for more information.  

FAQs

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