Designed with top-of-the-line notebook computers in mind this high performance drive delivers the capacity and speed needed to supercharge a notebook PC without compromising battery life or quiet acoustics. Features like these also make this drive an outstanding option for compact desktops external hard drives gaming system: s and blade servers. Type Hard drive: Internal. Interface Type Serial: ATA-300. Data Transfer Rate: 300 MBps. Average Seek Time: 12 ms. Spindle Speed: 7200 rpm. Buffer Size: 16MB. Form Factor: 2.5 x 1/8H. Dimensions: (WxDxH) 2.8 in x 3.9 in x 0.4 in. Capacity: 250GB.