| 摘要 |
A portable accessory device, comprises a resource device circuit, such as a storage device, having a port interface circuit that interfaces with an external device via a port. The port interface circuit provides an electrical power source via the external device for powering the resource device. A battery powers at least one user activated functionality of the accessory device, such as one provided by a light source. A housing encloses the resource device circuit, the port interface circuit and the battery to provide a plurality of integrated functionalities for the accessory device. |
