USB memory key for use with e.g. desktop computer, has USB connector with end connected to roller so that connector uses roller as axis for being moved towards outside when it is used, where roller rotates relative to movement of connector

摘要

The key has a body (101) with a retention space (101a) for containing a USB connector (103) and a rotating roller (105). An end of the connector is movably connected to the roller such that the connector is in the space and uses the roller as an axis for being moved towards outside from the space, when it is not used and used, respectively. The roller circularly rotates inside the space relative to the movement of the connector.