WD Blue 1TB SATA 6 Gb/s 7200 RPM 64MB Cache 3.5 Inch Desktop Hard Drive WD10EZEX (Certified Refurbished) A Certified Refurbished product has been tested and certified to work and look like new, with minimal to no signs of wear, by a manufacturer or specialized third-party seller approved by Amazon. This product is backed by a 30-day free return policy. 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. Package includes a hard drive only - no screws, cables, manuals included. Please purchase mounting hardware and cables separately if necessary.