Western Digital Caviar 500gb 7200rpm desktop hard drives features a lightning-fast 16mb Cache. WD5000AAKS will empower your computer to be able to execute simple to most complicated personal and business software applications with data transfer rate of upto 300 MB/s. These 500gb SATA hard drives are perfectly designed for today's desktop environment and makes even the most difficult computing task operate with ease. WD5000AAKS Feature: Brand: Western Digital. Series: Caviar SE16. Model: WD5000AAKS. Interface: SATA 3.0Gb/s. Capacity: 500GB. RPM: 7200 RPM. Cache: 16MB.