Method for Controlling Non-Volatile Semiconductor Memory System

A method for controlling a memory system that utilizes a recording medium, to which a memory function is added by inserting, via a connector, either a first recording medium operating based on a first power-supply voltage, or a second recording medium operating based on a second power-supply voltage, the second power-supply voltage being different from the first power-supply voltage, the method comprising:

• when the first or second recording medium is inserted, determining whether it is the first recording medium or the second recording medium by using the first power-supply voltage;
• when the recording medium inserted to the connecter is determined to be the first recording medium, accessing the recording medium using the first power-supply voltage;
• and
• when the recording medium inserted to the connector is determined to be the second recording medium, accessing the recording medium using the second power-supply voltage.