The present invention provides an interface device using a function of switch that can execute various applications in a mobile terminal by multi-switching USB_D+ and USB_D\u2212, or RS232C data line to an external interface; and, particularly, that can make the mobile terminal used as a PC camera. The information processing apparatus may have a memory configured to store an identification information of an IC tag in association with a communication profile in a table. The suctioned sample and the solution are supplied to the detection container. In a preferred embodiment, the toroids are hinged for ease of installation on a power line.