A portable card type data storage device with a large capacity and low
power consumption is provided which enalbes two storage mediums with
different features to be installed into a single slot of an information
processing device. The card type data storage device 100 of the invention
includes a case 10 having a connection slot 10a, a first connector 11
adapted to be inserted into and connected with a connection slot 201 of an
information processing device such as a PC 200, a hard disk 13 housed in
the case 10, a second connector 12 for connection with a semiconductor
memory 18 inserted into the connection slot 10a, and a storage device
control section 20. When the first connector 11 is inserted into and
connected with the information processing device 200, the storage device
control section 20 receives electric power from the information processing
device 200, and makes the hard disk 13 and the semiconductor memory 18,
which is inserted into the connection slot 10a and connected with the
second connector 12, function as external storages of the information
processing device 200. Thus, two storage mediums comprising the
semiconductor memory 18 of low power consumption and the hard disk 13 of a
large capacity can be connected with the information processing device 200
through the single slot 201 thereof.
