+       Endpoint_ClearStatusStage();\r
+}\r
+\r
+#if !defined(NO_INTERNAL_SERIAL) && (defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))\r
+static char USB_Device_NibbleToASCII(uint8_t Nibble)\r
+{\r
+       Nibble = ((Nibble & 0x0F) + '0');\r
+       return (Nibble > '9') ? (Nibble + ('A' - '9' - 1)) : Nibble;\r
+}\r
+\r
+static void USB_Device_GetInternalSerialDescriptor(void)\r
+{\r
+       struct\r
+       {\r
+               USB_Descriptor_Header_t Header;\r
+               int16_t                 UnicodeString[20];\r
+       } SignatureDescriptor;\r
+\r
+       SignatureDescriptor.Header.Size  = sizeof(SignatureDescriptor);\r
+       SignatureDescriptor.Header.Type  = DTYPE_String;\r
+       \r
+       uint8_t  SigReadAddress     = 0x0E;\r
+\r
+       for (uint8_t SerialCharNum = 0; SerialCharNum < 20; SerialCharNum++)\r
+       {\r
+               uint8_t SerialByte = boot_signature_byte_get(SigReadAddress);\r
+               \r
+               if (SerialCharNum & 0x01)\r
+               {\r
+                       SerialByte >>= 4;\r
+                       SigReadAddress++;\r
+               }\r
+               \r
+               SignatureDescriptor.UnicodeString[SerialCharNum] = USB_Device_NibbleToASCII(SerialByte);\r
+       }\r
+       \r
+       Endpoint_ClearSETUP();\r
+\r
+       Endpoint_Write_Control_Stream_LE(&SignatureDescriptor, sizeof(SignatureDescriptor));\r
+\r