The 300GB 10K rpm Serial ATA Hard Drive benefits from outstanding Lenovo drive quality, reliability, compatibility, and testing program. Also, the 300 MB/s instantaneous data transfer rate is a 50% improvement over previous Serial ATA technology.300 GB formatted capacity 3 ms average latency Read Seek time of 4.2 ms typical (without command overhead) Serial ATA interface capability enabling up to 300 MB/s(2) instantaneous interface data transfers Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.) included Slim, one-inch-high profile Includes 2.5'' to 3.5'' adapter for installation in standard desktop and workstation hard drive bays Three-year limited warranty