The Hitachi HDS721025CLA682 250 GB 3.5 inch SATA III Desktop Hard Drive is a high-capacity internal desktop drive suitable for PCs. With a rotation speed of 7200 RPM and a cache size of 8 MB, this silver-colored hard drive offers reliable storage for your files and data. This product is a unit of a single 250 GB HDD, making it a great choice for expanding your desktop's storage capacity. The sleek 3.5 inch form factor and SATA III interface ensure compatibility and efficient data transfer.