Sonnics 250gb - Black 2.5 Inch External Pocket Sized USB Hard Drive for PC, Laptops, Macs and Playstation 3 Runs straight from a usb 2.0 or usb 3.0 port no external power source needed Fits in your pocket with ease, Comes with usb cable and protective pouch reliable portable storage solution formatted to FAT32 for use with all operating systems mac os and windows 1 year warranty direct with Sonnics