Seagate Momentus 750 GB 5400RPM SATA 3GB/s NCQ 16 MB Cache 2.5-Inch Internal Notebook Bare Drive - ST9750423AS 5400 RPM Spin Speed, 16MB Cache, SATA 3Gb/s interface with Native Command Queuing and 750 GB Capacity 5400 RPM enables affordable, low-power and high-capacity drives for external enclosures. Best-Fit Applications include mainstream and high-performance laptops, external storage solutions and industrial applications requiring a small form factor. Ships in Certified Frustration-Free Packaging