The 200 GB 7200 RPM Serial ATA Hard Drive with Free Fall Sensor from Dell combines the freedom of mobility and enhanced productivity for mainstream and highperformance PCsworkstations Featuring Serial ATA interface this drive delivers 3 Gbps interface speed Offering a rotational speed of 7200 RPM this drive provides fast disk access The 16 MB cache optimizes performance so that applications run fast and smooth Incorporating WhisperQuiet operation technology this hard drive ensures silent operation while GForce protects data from physical shocks This product has been tested and validated on Dell systems and is compatible with Dell Inspiron 1521 Notebook It is supported by Dell Technical Support when used with a Dell System