It is a mid-rangePCIe Gen3 x4 drive designed for a balance of power efficiency and reliability in compact devices. The Samsung PM991 256GB. Interface: PCIe Gen3 x4. NAND Type: Samsung 3D TLC (Triple-Level Cell).
SAMSUNG PM991 256GB NVME PCIe GEN 3 X4 2230 SSD (Z11)
(Lot Of 2) Samsung PM991 128GB Internal SSD - M.2 2230 - MZ9LQ128HBHQ
Samsung PM991 NVMe PCIe 512GB SSD MZVLQ512HBLU-00BH1
GIGABYTE GA-Z270 -HD3 MOTHERBOARD+INTEL I7-7700 CPU 3600MHz +256GB M2 SSD
SAMSUNG PM851 256GB MSATA SSD MZMTE256HMHP-000MV
SAMSUNG PM961 256GB M.2 PCIe3 x4 NVMe 2280 (43)