/** Selects the XMEGA C3 XPLAINED specific board drivers, including the Button and LEDs drivers. */
                        #define BOARD_C3_XPLAINED          55
 
+                       /** Selects the U2S specific board drivers, including the Button and LEDs drivers. */
+                       #define BOARD_U2S                  56
+
                        #if !defined(__DOXYGEN__)
                                #define BOARD_                 BOARD_NONE