General device type hard drive external portable capacity 4tb interface usb 30 features automatic backup cloud backup width 78 mm depth 1145 mm height 205 mm weight 540 g expansion amp connectivity interfaces 1 x usb 30 power power source usb bus software amp system requirements software included driver seagate backup dashboard onedrive 200 gb cloud storage 2 years subscription os required microsoft windows 7 or later apple ma