Disclosed is a device selection structure which can select a portion of or one device from a plurality of devices. The disclosed structure comprises: a plurality of devices (21, 22, 23, 24) each equipped with an input terminal (212) and an output terminal (214); a moving plate (30) which is installed such that it is mobile and whereon the plurality of devices are fitted; and device modules having input connectors (222) and output connectors (224). The structure is configured so that when the moving plate is moving the input terminals and output terminals of the plurality of devices sequentially connect with the input connectors and the output connectors of the device modules at a predetermined location.