End your quest for the ideal computer hard drive for your family and business computing needs by choosing the Western Digital WD3200AAJS-60Z0A0 Caviar Blue 320 GB HDD SATA II internal hard drive. It has an impressive combination of speed and low power usage. This versatile drive works in both Mac and PC computers that accept 3.5-inch form factor SATA II drives, and it is designated for use on both desktop computers and laptops. The Caviar Blue 320GB drive is ideal for business, home use, or high performance desktops. This Western Digital WD3200AAJS-60Z0A0 Caviar Blue SATA II hard drive offers a hefty 320 GB capacity, meaning you have plenty of room for your photos, videos, and music. Its fast and efficient 3 GB per second SATA II interface speed matches the demands of most programs, and it has a Serial ATA-300 interface with a 7-pin connector. With a high-speed 8 MB cache buffer size, 4.2 millisecond (nominal) average latency, and a highly efficient 7200RPM motor, you enjoy faster speeds and increased battery life. The Native Command Queuing (NCQ) feature and hot-pluggable point-to-point connections ensure efficient and flexible performance. Expect a respectable external data transfer rate of 300 MB per second. Western Digital provides you with reliable and durable drives in the Caviar Blue HDD drive line. To start, it builds sturdy hardware components, such as using a rigid stainless steel top, which makes it about 1.5 times more durable than average drives. It has also implemented the industry-leading ShockGuard technology, which protects the drive’s mechanics and platter surfaces from impact vibration. For additional non-operational shock tolerance, the DuraStep Ramp feature secures the recording heads away from the disk during spin up, spin down, and when the drive is off. This results in much less wear and tear, giving your drive longevity. If the worst should occur, this hard drive is equipped with hot swap, ensuring you that your data is not lost. Finally, this storage device provides better protection for your files through a feature called Data Lifeguard, which utilizes no-touch ramp load technology. Perhaps one of the best features of all, this WD3200AAJS-60Z0A0 Caviar Blue SATA II 3 GB per second hard drive was built for quiet performance. Western Digital’s WhisperDrive technology reduces noise output to create a virtually silent drive. With a sound emission of 25 dBA, you don’t even know your laptop is on. Meanwhile, the state-of-the-art SoftSeek technology streamlines algorithms to minimize seek noise. These same algorithms speed up the drive’s seek times (8.9 millisecond average), which improves battery consumption as well. With its long-term reliability, durability, speed, and broad compatibility, the WD3200AAJS-60Z0A0 Caviar Blue SATA II hard drive pleases even the most demanding laptop and portable device needs. This Western Digital Caviar Blue WD3200AAJS-60Z0A0 320 GB HDD internal hard drive provides the best performance if kept between 32 and 140 degrees Fahrenheit with a humidity range between 5 and 95 percent. It is compliant with S.M.A.R.T. standards. Actual dimensions of the Caviar Blue drive are 1 inch high by 4 inches wide by 5.8 inches deep, with a weight of 1.32 pounds.