WD Caviar Blue SATA Hard Drives 500 GB, SATA 6 Gb/s, 32 MB Cache, 7200 RPM Performance and reliability for everyday computing. With SATA and PATA interfaces and cache sizes up to 32 MB, this series of drives offer a full range of performance features. Pick the drive that suits your needs with the confidence in knowing that all WD Caviar Blue drives are built to the highest standards of quality and reliability. Model: WD5000AAKX Built to Western Digital's awarding winning quality standards, these drives are available in a full range of performance features. Key Features Solid performance - With SATA and PATA interfaces, and cache sizes up to 32 MB, this series of drives offer a full range of performance features. Ultra cool and quiet - Keeping the drive cool enhances reliability. WD continues to develop new and innovative ways to keep drives cool while they are operating which helps protect the drive and the data stored on it. Capacity - We offer WD Caviar Blue drives with capacities from 80 GB to 1 TB because you can never have too much storage space. NoTouch ramp load technology - The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit. IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise and vibration. ShockGuard - Instantaneously protects the hard drive against damage from bumps and vibrations while it is running. This technology enables WD Caviar drives to achieve industry-leading shock specifications. Compatible - We perform tests on hundreds of systems and a multitude of platforms in our FIT Lab and Mobile Compatibility Lab to give our customers confidence that our drives will work in their systems. Ideal For Family and business computing How this WD hard drive protects your data Data Lifeguard is an exclusive set of data protection features, including shock protection, an environmental protection system and real-time embedded error detection and repair. WD's Data Lifeguard technology automatically finds, isolates, and repairs problems that may develop over the life of a hard drive. Data Lifeguard Tools are software utilities designed for WD hard drives that work with the embedded Data Lifeguard features to make hard drive installation,diagnostics and repair both simple and worry-free. ShockGuard instantaneously protects the hard drive against damage from bumps and vibrations while it is running. This technology enables WD Caviar drives to achieve industry-leading shock specifications. Performance Specifications Buffer Size 32 MB Load/unload Cycles 300,000 minimum Physical Specifications Formatted Capacity 500,107 MB Interface SATA 6 Gb/s Physical Dimensions English Height 1.028 Inches Depth 5.787 Inches Metric Height 26.1 mm Depth 147 mm Environmental Specifications Acoustics Idle Mode 28 dBA (average) Seek Mode 0 33 dBA (average) Electrical Specifications Current Requirements Power Dissipation Read/Write 6.80 Watts Idle 6.10 Watts Standby 0.70 Watts Sleep 0.70 Watts