You are purchasing a perfectly matched lot of 10 identical SK Hynix PC601 NVMe SSDs. These are premium, high-performance OEM drives pulled from corporate workstations during storage upgrades. Capacity: 256GB per drive. Interface: NVMe PCIe Gen3 x4. Security: TCG OPAL 2.0 Compliant (Self-Encrypting Drive). Sequential Read Speed: Up to 3,100 MB/s. Sequential Write Speed: Up to 1,300 MB/s. Compatible with most modern laptop or desktop motherboards that support M. 2 2280 PCIe NVMe drives. Please Note: These are NVMe (M-Key) drives. They are NOT compatible with older motherboards or laptops that only support SATA M. Please verify your system’s compatibility before purchasing.