Seagate Momentus 5400 320GB 5400RPM SATA 3Gb/s 8MB Cache 2.5 Inch Internal NB Hard Drive ST9320325AS-Bare Drive

From the Manufacturer Seagate Momentus 2.5" Internal Hard DriveEnergy Efficient, High Capacity StorageEngineered specifically for low-power applications, the Momentus internal drive has a 5400RPM spindle speed and an 8MB cache to provide energy-efficient performance at whisper-quiet acoustic levels.

With reduced power consumption and heat generation, this drive will reduce power costs up to 50% over the life of the system compared to standard drives.

It is optimized for standard laptops and small form factor PCs.

Robust design and high shock tolerance enable mobility in rugged environments Durable Mobility Anywhere, AnytimeMomentus is the world's most feature-rich 2.5-inch drive for laptop upgrades and external enclosures.