+ * <b>NO_INTERNAL_SERIAL</b> - ( \ref Group_Descriptors ) \n\r
+ * Some AVR models contain a unique 20-digit serial number which can be used as the device serial number, while in device mode. This\r
+ * allows the host to uniquely identify the device regardless of if it is moved between USB ports on the same computer, allowing\r
+ * allocated resources (such as drivers, COM Port number allocations) to be preserved. This is not needed in many apps, and so the\r
+ * code that performs this task can be disabled by defining this option and passing it to the compiler via the -D switch.\r
+ *\r