Origin Storage 750Gb Desktop 3.5in SATA HD kit 7200Rpm Dell Wkstn Chassis, 750 GB, 7200 RPM, Serial ATA Origin Storage 750Gb Desktop 3.5in SATA HD kit 7200Rpm Dell Wkstn Chassis. HDD capacity: 750 GB, HDD speed: 7200 RPM, Interface: Serial ATA