WD Blue 1TB  Mobile Hard Disk Drive - 5400 RPM SATA 6 Gb/s 64MB Cache 9.5 MM 2.5 Inch  - WD10J31X 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.