WD Caviar Green WD5000AADS Hard Drive uses less power and support quieter, cooler-running desktop PCs and external storage devices. As hard drive capacities increase, the power required to run those drives increases as well. WD Caviar Green drive make it possible for energy-conscious customers to build systems with higher capacities and the right balance of system performance, ensured reliability, and energy conservation. Product Type: Hard Drive Technical Information Storage Capacity: 500 GB Drive Performance Rotational Speed: 7200 rpm Interfaces/Ports Hard Drive Interface: 1 x 7-pin Serial ATA/300 Serial ATA Physical Characteristics Form Factor: Internal Compatible Drive Bay Width: 3.5" Height: 26 mm Width: 102 mm Depth: 147 mm Weight: 730 g Manufacturer Warranty: 3 YEARS