Toshiba MK2555GSXF 250GB SATA/300 5400RPM 8MB 2.5" Hard Drive Toshiba MK2555GSXF 250 GB 2.5-inch Notebook Hard Drive General Features: 250 GB capacity Serial ATA interface SATA/300 data transfer rate Data transfers up to 3.0 Gbit/s 5400 RPM spindle speed 8 MB cache buffer 12 ms average seek time 5.55 ms average latency 2.5-inch form factor 9.5 mm drive height Power Specifications: DC +5V, 1.0A Regulatory Approvals: UL