It is an object of the present invention to navigate connection among a controller housing and disk device housings which constitute a storage device. The controller housing, the disk device housings, and the like are stored in a storage device housing and are connected by ENC cables according to a typical connection method as preparation. A connection information file, which defines a connection state among respective connectors, is inputted to the controller housing. A controller lights or blinks LEDs of connectors, to which the ENC cables should be connected based on the connection information file, in a connection order. The controller navigates connection by sequentially lighting the LEDs of the connectors, which should be connected, in this way.