HP 1TB Sliver Brushed Aluminum Portable Hard Drive (HPHDD2E31000AS1-RBU) The durable stylish brushed aluminum case compliments any office or home dcor. USB 3.0: Connect to a USB 3.0 port to save files up to 4x faster than USB 2.0. The HP Portable Hard Drive is backward compatible with USB 2.0. HP SimpleSave backup software: There's no complicated software to install or learn. Just run SimpleSave and after the first backup, the software frequently checks for file changes so your backup is always up to date. USB Powered: Powered through the USB cable-no need to carry around a bulky power adapter. SimpleSave Backup Software, 18-Inch USB 3.0 cable, Quick Start Guide included in the Box