The drive comes fully partitioned and pre-formatted in NTFS format so you can instantly access the drive by simply plugging it into your computer through a USB port. Unlike conventional desktop disk drives, the Portable Series drive makes it possible for you to instantaneously add greater storage capacity to your system without having to take the computer apart. The Seagate Maxtor Portable Series External Hard Drive is a high-performance external hard drive that supports USB 2.0 and USB 3.0. Durable matt black design stands up to the rigours of daily use.Comes with free backup and security software.Uses SuperSpeed USB 3.0 interface for very high performance data access.No separate power supply is needed because the drive is powered from the USB cable.Small size and quiet operation due to the use of a 2.5 inch drive.