The Samsung PM991 256GB Internal M.2 Solid State Drive (SSD) in black color is a high-speed storage solution compatible with PCs. This SSD features a transfer rate of 550 Mbps and a storage capacity of 256GB, with a form factor of M.2 and a cache size of 256MB. The drive supports SSD technology and has a manufacturer warranty of 1 year. It is designed for low noise levels and offers hybrid HDD/SSD features, making it a reliable choice for enhancing the performance of your computer system.