A power supply apparatus includes a power supply unit that wirelessly supplies power to an electronic apparatus, and a control unit that controls, if power output from the power supply unit to the electronic apparatus is lower than a first predetermined value, the communication unit so that a predetermined speed for transmitting the predetermined data is higher than a second predetermined value. The current mode output driver drives a transmission line with an alternating current signal and a direct current signal. Upon release of the lock mechanism, however, the screen is free to be pivoted away from the stowed position, and in one embodiment, is automatically pivoted at least partially away from the stowed position.