Electronic apparatus, control method in electronic apparatus, and apparatus

An electronic apparatus comprising a plurality of USB (Universal Serial Bus) interfaces and capable of supplying a current to a plurality of external devices connected to the plurality of USB interfaces, the electronic apparatus comprising:

• a USB hub circuit that controls the plurality of USB interfaces;
• a controller that controls a plurality of circuits including at least the USB hub circuit;
• a plurality of power source control units connected to each of the plurality of USB interfaces in order to control power supply to an external device connected to one USB interface by a power source control unit corresponding to the one USB interface, and configured to output a detection of an overcurrent supplied to an external device as an overcurrent detection signal to the USB hub circuit via a plurality of first signal lines respectively corresponding to the plurality of power source control units;
• a logic circuit that is connected to the plurality of first signal lines, connected to the controller, and controls an interrupt signal to the controller based on the overcurrent detection signal input from the plurality of first signal lines;
• and
• a plurality of second signal lines that individually connect the controller and the plurality of power source control units,
• wherein in response to receiving the overcurrent detection signal from any power source control unit out of the plurality of power source control units, the USB hub circuit acquires specifying information for specifying the power source control unit that outputs the overcurrent detection signal,
• wherein based on the interrupt signal from the logic circuit, the controller acquires the specifying information transmitted from the USB hub circuit, the controller controls an output to a signal line to be in a specific output state, the signal line corresponding to the specified power source control unit out of the plurality of power source control units, so as to shut off a current to be supplied to the external device connected to the specified power source control unit, and
• wherein the USB hub circuit is not capable of individually controlling the plurality of power source control units.