Addlink

Addlink S91

Brand:: Addlink
Capacity:: 2 TB
Interface:: PCIe 4.0 x4
NAND Type:: QLC
Controller:: Phison E21T

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Manufacturer: Addlink Last updated: 2026-09-15

Addlink S91 (Phison E21T + Micron N48R) Review

The Addlink S91 is a compact M.2 2230 PCIe 4.0 NVMe SSD using Phison's E21T controller and Micron 176-layer QLC NAND.

Its small form factor makes it a fit for handhelds like the Steam Deck or ROG Ally, though QLC and DRAM-less design mean it trades some sustained performance for size.

Specifications

Identity

Brand	Addlink
Model Number	Addlink S91 (Phison E21T + Micron N48R)
Series	S91

Interface and form

Drive Type	Internal
Bus Interface	PCIe 4.0 x4
Form Factor	M.2 2230

Capacity

Capacity	2000 GB

Sequential performance

Sequential Read	5000 MB/s
Sequential Write	4000 MB/s

Controller and cache

Controller	Phison E21T
Controller Vendor	Phison
DRAM Cache	DRAM-less with HMB

NAND

NAND Type	QLC
NAND Vendor	Micron
NAND Layers	176

Endurance and reliability

Endurance TBW	450 TB

Physical and commercial

Warranty	5 Years

Data Source	guru3d.com review of the Addlink S91 2TB (Phison E21, Micron 176L QLC, 64MB HMB)

FAQs

What are the key specifications of the Addlink S91 (Phison E21T + Micron N48R)?

The Addlink S91 (Phison E21T + Micron N48R) is a component from Addlink. Key specs: Capacity Options 2 TB, Interface PCIe 4.0 x4, M.2 2230, Type Internal, NAND Type QLC, NAND Supplier Micron 176-layer QLC.