With the launch of the 640Gb capacity point and the seventh generation of the 5400-RPM Seagate Momentus family, Seagate delivers the largest and most feature rich product available today. The momentus family is designed for standard form factor mainstream laptops, entry-level laptops and external backup storage enclosures. The family is known for the innovative featues and technology that Seagate builds into every launch of the Momentus line.