The Hitachi Travelstar 5K320 Hard Drive has a capacity of 250 GB. The enclosure of the hard drive is internal as opposed to a portable external hard drive. It is a physical component of the computer itself. The Hitachi Travelstar is a hard disk drive and has a buffer size of 8 MB. Its spindle speed is 5400 RPM. The Hitachi 5K320 Hard Drive has an external data transfer rate of 300 Mbps and a seek time as fast as 12 ms. The Hitachi Travelstar 5K320 Hard Drive is a hard drive that is enclosed in a laptop computer, and the platform is a PC. The form factor of the Hitachi Travelstar is 6.3 cm ultra slim line. The weight of the Hitachi 5K320 Hard Drive is kept light, coming in at 0.1 kg, and the product dimensions of the Hitachi Travelstar 5K320 Hard Drive are height 0.94 cm, width 7.01 cm, and depth 10.01 cm.