The Hitachi SATA 3TB 3.5'' HDD is a high-capacity internal desktop drive designed for use with PCs. With a storage capacity of 3TB and a rotation speed of 7200 RPM, this drive offers fast and efficient data access and storage. The silver-colored drive features a cache size of 64MB and is compatible with HDD drive types. The compact form factor of 3.5 inches makes it easy to install and use within a desktop computer system.