Abstract: A branching device (connection equipment) 2 for connection to electronic equipment 1 divides signal lines used for USB 3.0 (first interface) into signal lines used for USB 2.0 (second interface) and signal lines not used for USB 2.0. The branching device 2 can be connected to a connection device 4 performing communication in accordance with USB 2.0 and to a connection device 3 performing communication using the signal lines not used for USB 2.0. The electronic equipment 1 inputs/outputs data, through the branching unit 2, to/from the connection device 4 in accordance with USB 2.0 and to/from the connection device 3 by communication using the signal lines not used for USB 2.0. The two types of data input/output can be executed in parallel.

Abstract: An image forming apparatus includes an auto pattern updating unit for determining transition time for transition from a normal conduction state to a power saving state of each time of day based on job logs, and a display processing unit for displaying the determined state of transition of each time of day on a display unit on hour-by-hour basis. The display device may be an external PC for management, or an operation display panel of the image forming apparatus. For the time of day of which transition time cannot be determined, the shortest time period is allocated. The hour-by-hour transition time is displayed in color-coded manner. The automatically determined transition time may be changed by a user operation.