... apple card reader Specification1: HDMI to HDTV for iPad1, iPad2, iPhone4, iPone 4S, ... ) via the 30-pin dock connector and to your HDMI-compatible display using an ... Attach power adaptor or computer using the accompanying micro USB cable.6. USB port: Plug the connection ... iPad through USB flash disk. Besides, the USB port supports external PC keyboard input. More ... DC port,USB port,mini USB port,HDMI PORT