General device type hard drive external portable capacity 1tb interface usb 30 features shock resistant pressure proof rugged rain resistant width 86 cm depth 135 cm height 19 cm weight 240 g performance interface transfer rate 50 gbps usb 30 spindle speed 5400 rpm expansion amp connectivity interfaces 1 x usb 30 power power source usb bus software amp system requirements software included lacie backup assistant os r