diff --git a/usb_desc.h b/usb_desc.h
new file mode 100644
--- /dev/null
+++ b/usb_desc.h
@@ -0,0 +1,66 @@
+/**
+  ******************************************************************************
+  * @file    usb_desc.h
+  * @author  MCD Application Team
+  * @version V4.0.0
+  * @date    21-January-2013
+  * @brief   Descriptor Header for Virtual COM Port Device
+  ******************************************************************************
+  * @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_DESC_H
+#define __USB_DESC_H
+
+/* Includes ------------------------------------------------------------------*/
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported define -----------------------------------------------------------*/
+#define USB_DEVICE_DESCRIPTOR_TYPE              0x01
+#define USB_CONFIGURATION_DESCRIPTOR_TYPE       0x02
+#define USB_STRING_DESCRIPTOR_TYPE              0x03
+#define USB_INTERFACE_DESCRIPTOR_TYPE           0x04
+#define USB_ENDPOINT_DESCRIPTOR_TYPE            0x05
+
+#define VIRTUAL_COM_PORT_DATA_SIZE              64
+#define VIRTUAL_COM_PORT_INT_SIZE               8
+
+#define VIRTUAL_COM_PORT_SIZ_DEVICE_DESC        18
+#define VIRTUAL_COM_PORT_SIZ_CONFIG_DESC        67
+#define VIRTUAL_COM_PORT_SIZ_STRING_LANGID      4
+#define VIRTUAL_COM_PORT_SIZ_STRING_VENDOR      38
+#define VIRTUAL_COM_PORT_SIZ_STRING_PRODUCT     50
+#define VIRTUAL_COM_PORT_SIZ_STRING_SERIAL      26
+
+#define STANDARD_ENDPOINT_DESC_SIZE             0x09
+
+/* Exported functions ------------------------------------------------------- */
+extern const uint8_t Virtual_Com_Port_DeviceDescriptor[VIRTUAL_COM_PORT_SIZ_DEVICE_DESC];
+extern const uint8_t Virtual_Com_Port_ConfigDescriptor[VIRTUAL_COM_PORT_SIZ_CONFIG_DESC];
+
+extern const uint8_t Virtual_Com_Port_StringLangID[VIRTUAL_COM_PORT_SIZ_STRING_LANGID];
+extern const uint8_t Virtual_Com_Port_StringVendor[VIRTUAL_COM_PORT_SIZ_STRING_VENDOR];
+extern const uint8_t Virtual_Com_Port_StringProduct[VIRTUAL_COM_PORT_SIZ_STRING_PRODUCT];
+extern uint8_t Virtual_Com_Port_StringSerial[VIRTUAL_COM_PORT_SIZ_STRING_SERIAL];
+
+#endif /* __USB_DESC_H */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/