THE HITACHI 7mm slim drives have revolutionized the mobile hard drive by combining enterprise-grade craftsmanship with a massive 320GB capacity, packed into a slim 7mm form factor.Built to the highest standards of quality and reliability, these drives offer the features and capacity ideal for your everyday computing needs.State-of-the-art seeking algorithms and advanced power management features ensure low power consumption and long battery life.While SATA has become the industry standard interface, WD continues to manufacture mobile drives with a PATA interface for unique or legacy systems.built for internal and external use.