The Western Digital Caviar Blue 160GB Internal 7200 RPM 3.5" Hard Drive WD1600AAJS is a high-performance internal desktop drive designed for use with PCs. With a storage capacity of 160GB and a rotation speed of 7200 RPM, this hard drive offers fast data access times and efficient data storage. The SATA II interface provides reliable connectivity, making it suitable for demanding applications. Part of the Caviar Blue product line, this hard drive from Western Digital combines quality and performance for a reliable storage solution.