Patent ID: 8854933

Claim:
An information processing apparatus comprising: a connector electrically connected to a drive unit in a state where the drive unit is connected to the information processing apparatus; a detector configured to detect an operation performed on a specific button disposed on the drive unit based on a change in a voltage of a specific pin of the connector in a state where the drive unit is connected to the information processing apparatus but is not driving a medium and an operational voltage is not applied to the drive unit; a power controller configured to start applying the operational voltage to the drive unit via the connector in response to the operation detected by the detector; and a determination unit configured to determine that the drive unit is not connected to the information processing apparatus in a case where the voltage of the specific pin indicates a first voltage value, and determine that the drive unit is connected to the information processing apparatus in a case where the voltage of the specific pin indicates a second voltage value less than the first voltage value, wherein the specific button is an eject button configured to receive an instruction to load or unload the medium from a user, wherein the detector is configured to detect that the eject button of the drive unit, to which the operational voltage is not applied, has been operated in a case where the voltage of the specific pin is changed from the second voltage value to a third voltage value, and wherein the voltage of the specific pin indicates any one of the first, the second, and the third voltage values.