The black 3TB Canvio Basics 5400 rpm USB 3.0 External Hard Drive from Toshiba HDTB330XK3CA provides 3TB of digital storage space for your Windows system. It comes with a hard drive that spins at a rate of 5400 rpm and offers 8MB of cache memory. You connect this drive to your computer with the included USB 3.0 cable, which supports 5 Gb/s transfer speeds. Once connected, the drive can be used as additional storage space or for backing up your videos, music, and other important files. To protect the data, Toshiba has equipped this drive with an internal shock sensor and ramp loading technology to guard against accidents and drops. Furthermore, it draws power from a USB powered port without the need for an external adapter.