Lenovo 1TB 7200 rpm Serial ATA Hard Drive 45J7918 Lenovo extends its line of outstanding hard drive upgrade options with the 1TB 7200 rpm Serial ATA Hard Drive for the Lenovo ThinkCentre M57/M57p eco Ultra Small Form Factor (USFF) desktop systems and the Lenovo ThinkStation S10/D10 Series workstation systems. The 300 MB/s in-stantaneous data transfer rate is a 50% improvement over previous Serial ATA technology. Features 1 TB formatted capacity 4.17 ms average latency Seek time of 8.2 ms typical (without command overhead) Serial ATA interface capability enabling up to 300 MB/s(3) instantaneous interface data transfers Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.) included Slim, one-inch-high profile Three-year limited warranty Specifications:Hard drive Average Latency 4.17 ms Average Seek Time 8.2 ms Hard disk size (GB)[4] 1 TB Hard drive speed (RPM) 7200 Interface type SATA Number of Platters 2 Swappable No