I/OMagic's GigaBank 4.0 is a portable storage device that lets you take all your data with you. With up to 4.0 GB of storage capacity packed into a mini unit, the GigaBank 4.0 is ideal for storing important files, backing up your computer, storing MP3s or transferring files from one computer to another. Powered through the USB 2.0 plug which when not in use can be conveniently tucked into the enclosure, this storage device requires no batteries or adapters. The included carrying case provides a convenient way to keep 4 GB of data in your pocket.