The Genuine 256GB Crucial M4 CT256M4SSD2 2.5" SATA III SSD Solid State Drive is a high-quality internal SSD designed for laptops. With a storage capacity of 256GB, this gray-colored solid-state drive from Crucial is compatible with SSD drive types and features a removable design. The 2.5-inch form factor makes it easy to install, and the SATA interface ensures fast data transfer speeds. The crucIal M4 Series is known for its reliability and performance, making it a great choice for upgrading your storage capabilities.