Toshiba MK5065GSX 500GB SATA/300 5400RPM 8MB 2.5" Hard Drive Toshiba MK5065GSX 500 GB SATA/300 2.5-inch Hard Drive General Features: 500 GB storage capacity SATA/300 interface 5400 RPM spindle speed 8 MB buffer Number of data heads: 4 Number of disks: 2 Bytes/Sector: 512 Average latency: 5.55 ms Average seek time: 12 ms Data transfer rate: 3.0 Gb/s 2.5-inch form factor 9.5 mm drive height Vibration and Shock: Operating Vibration: 1.0 G with 5-500 Hz