A surgical fastening system for attaching one piece of tissue to another piece of tissue. The vertical light emitting diode die also includes an electrode and an electrode frame on the n-type semiconductor layer, and an organic or inorganic material contained within the electrode frame. The communications processor is operable to consume electrical power at a first rate. Where the host port is USB compliant, power to the peripheral device modules may be supplied by the host system via a USB standard cable connected to the USB port of the hub end module, or, if more power is required, by an external a.