Device for processing information and working method thereof

A device for processing information and the working method of the same are provided. The device for processing information comprises: a memory in which logic for driving a firmware is stored; a connector for connecting the memory to an external device; and a control unit for providing an interface with a host, for communicating with the host through the connector, and for reading and recording data on the memory. The control unit comprises: a first storing device in which a routine for calling the firmware logic stored in the memory is stored; and a processor for executing the firmware logic, stored in the memory, using the routine stored in the first storing device.