PROBLEM TO BE SOLVED: To connect a plurality of USB memories by one mouse by providing a plurality of USB ports in a mouse main body.;SOLUTION: A USB mouse device is provided with a hub function part (1B) constituted of a USB port (20) installed in a USB mouse main body (1), and at least USB memory (11) is installed so as to be freely attachable/detachable in the USB port (20).;COPYRIGHT: (C)2006,JPO&NCIPI
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