Toshiba Storage Device Division provides a new range of HDDs with a top capacity of 500 Gigabyte (GB). The 2.5-inch HDD family's operation speed of 7,200 Rotations Per Minute (RPM) allows a fast internal transfer rate of 1255Mb/s max. The new energy efficient series is dedicated to delivering exceptional performance in highly portable computing devices without sacrificing storage space. The MKxx56GSY series offers 160GB, 250GB, 320GB and 500GB of storage, a 16MB disk cache and fast seek time (11 ms Read/12 ms Write). Despite the high density and fast speeds these HDDs have green credentials as they only consume 0.0020 watts per GB, again emphasizing Toshiba's commitment to the environment. This range of Toshiba Storage Device Division HDDs reinforces Toshiba's dedication to innovation in small form factor hard disk drive technology.