Purchased what was supposed to be a slot 2 rumble pak for ds lite, but it wasn't. This slot 2 device has a connector port (same size as mobile phone charger such as Blackberry, or PSP usb connection) that can connect via usb cable to pc. Looks similar to the slot 2 device that comes with Ncard. Does anyone know if this slot 2 device is of any use? I have an M3 Simply. Thanks.