Addlink S91 Gen4 NVMe SSD 1 TB (M.2 2230) | ad1TBS91M2P

Expand your device storage with the Addlink S91, a high-performance Gen4 NVMe SSD in compact M.2 2230 form—perfect for ultra-mobile devices like the Steam Deck, ROG Ally, or thin laptops. Delivering up to 4,900 MB/s read and 3,200 MB/s write, it features a DRAM-less design using a Phison E21T controller and Micron 176-layer QLC NAND. Equipped with SLC caching, HMB support, LDPC ECC, and TRIM, it ensures smooth real-world performance and reliable data protection.

• Model / MPN: S91 / ad1TBS91M2P
• Capacity: 1 TB
• Interface: PCIe 4.0 x4 NVMe 1.4 (backwards–compatible with PCIe 3.x)
• Form Factor: M.2 2230 (22 × 30 mm)
• Sequential Read: Up to 4,900 MB/s
• Sequential Write: Up to 3,200 MB/s
• Controller: Phison E21T (DRAM-less)
• NAND: Micron 176-layer QLC with SLC cache
• Error Correction: LDPC ECC; supports TRIM, SMART
• Host Memory Buffer: Yes (~64 MB HMB)
• Endurance: ~250 TBW; 5-year warranty
• MTBF: ~1.5 million hours
• Compatibility: Ideal for handheld gaming systems, ultrabooks, small form PCs