An electronic apparatus includes a first unit having a first power switch for turning on/off a data processing part, a hard disk drive device, a power supply part and the electronic apparatus, a second unit that is separated from the first unit, is supplied with the power from the power supply part in the first unit, and has a drive device of a detachable recording media and a second power switch having the same function as that of the first power switch, and a cable for communicating data between the first unit and the second unit and supplying power from the power supply part of the first unit to the second unit.