CARD-TYPE USB C TRANSFER DEVICE

A card-type USB C transfer device, which includes a first connection interface for coupling and electrically connecting a portable power source, a second connection interface for coupling and electrically connecting at least one external device, an internal circuit electrically connected to the first connection interface and the second connection interface, and been configured to provide more than one power transmission paths between the portable power source and the external device, wherein the portable power source is detachably coupled to the card-type USB C transfer device through the first connection interface.