Military-grade shock resistance - designed to meet u.S. Military drop test standards advanced 3-stage shock protection system - combines a rugged slip-resistant silicone outer shell, a reinforced hard casing, and an internal hard drive suspension damper usb 3.0 and usb 2.0 connection options - bandwidth up to 5gb/s in usb 3.0 mode and 480 mb/s in usb 2.0 mode one touch auto-backup button. 256-bit aes file and folder encryption using free transcend elite data management software. Operating voltage 5v