This is of of the best hardisk of segate.its perfrom data transfer at 30mb/ps approxly.it is very slim.i used it since 2 years.and it is also very slim.when you connect it with pc or laptop.one light is blink on this devicee.200gb free cloud storage with this device.its design is too good.various colour availabe in market.black, red, blue etc.its packet contain one hardisk.one usb cable, which is 3.0 interface.one manual book.its works in windows opareting system.