A double-sided male USB connector and various card-shaped devices having one or more male USB connectors, which may be single or double sided and are dimensioned to fit into a USB receptacle. When provided with a double sided connector, electronics may be provided to prevent short circuit. The device can have rechargeable power source that is fed power via the connector's power lines. The device can be manufactured from flexible material using a lamination process and may be configured to communicate with a broad variety of other electronic devices.