Seagate Momentus 40GB HDD 40GB Ultra-ATA/100 internal hard drive

40GB HDD, ATA100, 2.5H", 5400rpm, 2MB Seagate Momentus unlocks the power of notebook computers with a 5400-RPM spin speed and optional 8MB cache buffer. Momentus stands head-to-head with 4200-RPM notebook drives in BatteryMark tests, while simultaneously increasing system level performance by almost 50 percent. Seagate Momentus delivers the experience, commitment and innovation you expect from the world's leading manufacturer of disc drives.