Abstract: An image forming apparatus has a main body containing an image forming unit which forms an image on a recording sheet by electrophotography, and a connector unit in which at least one external connection terminal is mounted. The external connection terminal is connected to a control unit which controls the image forming unit. The connector unit is supported on the main body so as to be rotationally movable to a position in which a plug can be inserted into the external connection terminal from the front of the main body, which corresponds to the operation side.

Abstract: An information input/output system capable of selecting an optimum service station is provided in accordance with various service requests. An information input/output system according to the present invention comprises: a service center for offering various services through a communication network, a plurality of service stations for transmitting/receiving information to/from the service center through the communication network; and a user terminal for transmitting/receiving information to/from the service center or the service station through the communication network. In the present invention, even if the user terminal is not equipped with a printer or a facility for download or upload, various services can be received by arbitrarily selecting the service station 3 having necessary devices or facilities. It is hence possible to rapidly and precisely meet diverse service requests from a user.