The product is a used Samsung PM991 256GB M.2 NVMe SSD, designed for compatibility with laptops and PCs. This black internal SSD features a form factor of M.2 and offers a storage capacity of 256GB, with a write speed that is 2 times faster. It includes features like cache size of 256MB, a low noise level, and utilizes a hybrid storage format of HDD & SSD. The drive is designed for high performance and efficiency, making it a great choice for enhancing the speed and functionality of your computer.