Seagate Momentus 5400.6 500 GB 5400RPM SATA 3 GB/s 8 MB Cache 2.5-Inch Internal NB Hard Drive ST9500325ASG-Bare Drive with G-Force 5,400 RPM Spin Speed, 8 MB Cache Buffer, SATA 3Gb/s interface with Native Command Queuing, 500 GB Capacity. Two Year Warranty G-Force Protection feature available for added robustness in mobile environments 1000 Gs of nonoperating shock make the drive ideal for notebook PCs and industrial applications. Robust design and high shock tolerance enable mobility in rugged operating environments. Leverages Seagate laptop power management technology and utilizes ramp load features that remove the head from the disk during idle periods 5,400 RPM Spin Speed, 8 MB Cache Buffer, SATA 3Gb/s interface with Native Command Queuing, 500 GB Capacity G-Force Protection feature available for added robustness in mobile environments 1000 Gs of nonoperating shock make the drive ideal for notebook PCs and industrial applications. Robust design and high shock tolerance enable mobility in rugged operating environments. Leverages Seagate laptop power management technology and utilizes ramp load features that remove the head from the disk during idle periods