A power supply control apparatus comprises a receiving unit configured to receive data sent from an external device via a network, a control unit configured to process the data received by the receiving unit, a switching unit configured to switch between supply and disconnection of power from a first power supply unit to the receiving unit and to the control unit, and a mechanical switch configured to switch between supply and disconnection of power from a second power supply unit to the control unit. If the apparatus receives data from the external device in a power state in which power is supplied from the first power supply unit to the receiving unit and power to the control unit is stopped, the apparatus controls to supply power from the first power supply unit to the control unit without turning on the mechanical switch.