SAMSUNG PM991a 1TB M.2 2230 NVMe internal SSD

Form Factor M.2 2230

The Samsung PM991a is a 1TB internal solid state drive built in the M.2 2230 form factor. It connects through a PCI-Express 3.0 x4 interface using the NVMe protocol. This drive is designed for thin laptops, ultrabooks and compact devices that require the shorter 30mm module length.

Fits devices with 2230 slots

This SSD suits owners of hardware such as Surface Pro, Steam Deck, Dell, HP or Lenovo laptops that specifically accept M.2 2230 modules. It will not work in systems that only provide longer M.2 slots. Buyers must verify their device supports the 2230 size and PCIe 3.0 x4 NVMe signalling before purchase.

Sequential read up to 3100 MB/s

The headline specification is a sequential read speed of up to 3100 MB/s with sequential write up to 1400 MB/s. If your workload demands higher throughput, a PCIe 4.0 or 5.0 drive would be required. For standard OS boot, application loading and file storage in a 2230 slot, these speeds are adequate.