diff --git a/usb_conf.h b/usb_conf.h
new file mode 100644
--- /dev/null
+++ b/usb_conf.h
@@ -0,0 +1,103 @@
+/**
+  ******************************************************************************
+  * @file    usb_conf.h
+  * @author  MCD Application Team
+  * @version V4.0.0
+  * @date    21-January-2013
+  * @brief   Virtual COM Port Demo configuration  header
+  ******************************************************************************
+  * @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_CONF_H
+#define __USB_CONF_H
+
+/* Includes ------------------------------------------------------------------*/
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions ------------------------------------------------------- */
+/* External variables --------------------------------------------------------*/
+
+/*-------------------------------------------------------------*/
+/* EP_NUM */
+/* defines how many endpoints are used by the device */
+/*-------------------------------------------------------------*/
+
+#define EP_NUM                          (4)
+
+/*-------------------------------------------------------------*/
+/* --------------   Buffer Description Table  -----------------*/
+/*-------------------------------------------------------------*/
+/* buffer table base address */
+/* buffer table base address */
+#define BTABLE_ADDRESS      (0x00)
+
+/* EP0  */
+/* rx/tx buffer base address */
+#define ENDP0_RXADDR        (0x40)
+#define ENDP0_TXADDR        (0x80)
+
+/* EP1  */
+/* tx buffer base address */
+#define ENDP1_TXADDR        (0xC0)
+#define ENDP2_TXADDR        (0x100)
+#define ENDP3_RXADDR        (0x110)
+
+
+/*-------------------------------------------------------------*/
+/* -------------------   ISTR events  -------------------------*/
+/*-------------------------------------------------------------*/
+/* IMR_MSK */
+/* mask defining which events has to be handled */
+/* by the device application software */
+#define IMR_MSK (CNTR_CTRM  | CNTR_WKUPM | CNTR_SUSPM | CNTR_ERRM  | CNTR_SOFM \
+                 | CNTR_ESOFM | CNTR_RESETM )
+
+/*#define CTR_CALLBACK*/
+/*#define DOVR_CALLBACK*/
+/*#define ERR_CALLBACK*/
+/*#define WKUP_CALLBACK*/
+/*#define SUSP_CALLBACK*/
+/*#define RESET_CALLBACK*/
+/*#define SOF_CALLBACK*/
+/*#define ESOF_CALLBACK*/
+/* CTR service routines */
+/* associated to defined endpoints */
+/*#define  EP1_IN_Callback   NOP_Process*/
+#define  EP2_IN_Callback   NOP_Process
+#define  EP3_IN_Callback   NOP_Process
+#define  EP4_IN_Callback   NOP_Process
+#define  EP5_IN_Callback   NOP_Process
+#define  EP6_IN_Callback   NOP_Process
+#define  EP7_IN_Callback   NOP_Process
+
+#define  EP1_OUT_Callback   NOP_Process
+#define  EP2_OUT_Callback   NOP_Process
+/*#define  EP3_OUT_Callback   NOP_Process*/
+#define  EP4_OUT_Callback   NOP_Process
+#define  EP5_OUT_Callback   NOP_Process
+#define  EP6_OUT_Callback   NOP_Process
+#define  EP7_OUT_Callback   NOP_Process
+
+#endif /* __USB_CONF_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/