A device setting system comprises a host unit; and a device to be connected to the host unit. The host unit comprises a host unit controlling unit that activates the automatic setting module with a device to be connected being specified, each time the device driver is activated, requests, using the automatic setting module, the specified device to transmit device setting information, obtains, using the automatic setting module, device setting information from the specified device, and allows, using the automatic setting module, device settings based on the obtained device setting information to be reflected in the device driver. The device comprises a device storing unit that stores device setting information; and a device controlling unit that transmits the device setting information to the host unit in response to a request obtained from the host unit.