WD Blue 250GB Laptop 7mm Hard Drive: 2.5 Inch, SATA 6Gb/s, 5400 RPM, 8MB Cache WD2500LPVX IntelliSeek: Calculates optimum seek speeds to lower power consumption, noise and vibration. Data LifeGuard: Advanced algorithms monitor your drive continuously so it stays in optimum health. NoTouch Ramp Load Technology: Safely positions the recording head off the disk surface to protect your data. 2-year manufacturer limited warranty Package includes a hard drive only - no screws, cables, manuals included. Please purchase mounting hardware and cables separately if necessary. Ships in WD-certified box for safe transit during shipping