diff --git a/usb_prop.h b/usb_prop.h
new file mode 100644
--- /dev/null
+++ b/usb_prop.h
@@ -0,0 +1,87 @@
+/**
+  ******************************************************************************
+  * @file    usb_prop.h
+  * @author  MCD Application Team
+  * @version V4.0.0
+  * @date    21-January-2013
+  * @brief   All processing related to Virtual COM Port Demo (Endpoint 0)
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */
+
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __usb_prop_H
+#define __usb_prop_H
+
+/* Includes ------------------------------------------------------------------*/
+/* Exported types ------------------------------------------------------------*/
+typedef struct
+{
+  uint32_t bitrate;
+  uint8_t format;
+  uint8_t paritytype;
+  uint8_t datatype;
+}LINE_CODING;
+
+/* Exported constants --------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported define -----------------------------------------------------------*/
+
+#define Virtual_Com_Port_GetConfiguration          NOP_Process
+//#define Virtual_Com_Port_SetConfiguration          NOP_Process
+#define Virtual_Com_Port_GetInterface              NOP_Process
+#define Virtual_Com_Port_SetInterface              NOP_Process
+#define Virtual_Com_Port_GetStatus                 NOP_Process
+#define Virtual_Com_Port_ClearFeature              NOP_Process
+#define Virtual_Com_Port_SetEndPointFeature        NOP_Process
+#define Virtual_Com_Port_SetDeviceFeature          NOP_Process
+//#define Virtual_Com_Port_SetDeviceAddress          NOP_Process
+
+#define SEND_ENCAPSULATED_COMMAND   0x00
+#define GET_ENCAPSULATED_RESPONSE   0x01
+#define SET_COMM_FEATURE            0x02
+#define GET_COMM_FEATURE            0x03
+#define CLEAR_COMM_FEATURE          0x04
+#define SET_LINE_CODING             0x20
+#define GET_LINE_CODING             0x21
+#define SET_CONTROL_LINE_STATE      0x22
+#define SEND_BREAK                  0x23
+
+/* Exported functions ------------------------------------------------------- */
+void Virtual_Com_Port_init(void);
+void Virtual_Com_Port_Reset(void);
+void Virtual_Com_Port_SetConfiguration(void);
+void Virtual_Com_Port_SetDeviceAddress (void);
+void Virtual_Com_Port_Status_In (void);
+void Virtual_Com_Port_Status_Out (void);
+RESULT Virtual_Com_Port_Data_Setup(uint8_t);
+RESULT Virtual_Com_Port_NoData_Setup(uint8_t);
+RESULT Virtual_Com_Port_Get_Interface_Setting(uint8_t Interface, uint8_t AlternateSetting);
+uint8_t *Virtual_Com_Port_GetDeviceDescriptor(uint16_t );
+uint8_t *Virtual_Com_Port_GetConfigDescriptor(uint16_t);
+uint8_t *Virtual_Com_Port_GetStringDescriptor(uint16_t);
+
+uint8_t *Virtual_Com_Port_GetLineCoding(uint16_t Length);
+uint8_t *Virtual_Com_Port_SetLineCoding(uint16_t Length);
+
+#endif /* __usb_prop_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+