The Toshiba MK6475GSX is a 2.5-inch SATA hard drive offering 640GB capacity in a form factor suited for laptop and portable storage applications. It features a 5400RPM spindle speed, 8MB cache, and 3GB/s SATA interface, delivering sustained throughput suitable for standard computing workloads. This drive is compatible with most 2.5-inch SATA bays found in notebooks, external enclosures, and legacy storage systems requiring traditional mechanical storage. Typical use cases include laptop storage upgrades, external drive enclosures, and archival backup scenarios where capacity and reliability are prioritized over performance. The lower RPM specification makes it energy-efficient for portable applications. Tested and guaranteed; available via quote.