diff --git a/lib/main/STM32_USB_Device_Library/Class/hid_cdc_wrapper/src/usbd_hid_cdc_wrapper.c b/lib/main/STM32_USB_Device_Library/Class/hid_cdc_wrapper/src/usbd_hid_cdc_wrapper.c
index 3e50e36e5..032223f5f 100644
--- a/lib/main/STM32_USB_Device_Library/Class/hid_cdc_wrapper/src/usbd_hid_cdc_wrapper.c
+++ b/lib/main/STM32_USB_Device_Library/Class/hid_cdc_wrapper/src/usbd_hid_cdc_wrapper.c
@@ -134,7 +134,7 @@ static uint8_t  USBD_HID_CDC_DataOut      (void *pdev , uint8_t epnum);
 static uint8_t  USBD_HID_CDC_SOF          (void *pdev);
 static uint8_t*  USBD_HID_CDC_GetConfigDescriptor( uint8_t speed , uint16_t *length);
 
-#define USB_HID_CDC_CONFIG_DESC_SIZ  (USB_HID_CONFIG_DESC_SIZ - 9 + USB_CDC_CONFIG_DESC_SIZ)
+#define USB_HID_CDC_CONFIG_DESC_SIZ  (USB_HID_CONFIG_DESC_SIZ - 9 + USB_CDC_CONFIG_DESC_SIZ + 8)
 
 #define HID_INTERFACE 0x0
 #define CDC_COM_INTERFACE 0x1
@@ -169,7 +169,7 @@ __ALIGN_BEGIN static uint8_t USBD_HID_CDC_CfgDesc[USB_HID_CDC_CONFIG_DESC_SIZ] _
   USB_HID_CDC_CONFIG_DESC_SIZ,
   /* wTotalLength: Bytes returned */
   0x00,
-  0x02,         /*bNumInterfaces: 2 interfaces (1 for CDC, 1 for HID)*/
+  0x03,         /*bNumInterfaces: 2 interfaces (1 for CDC, 1 for HID)*/
   0x01,         /*bConfigurationValue: Configuration value*/
   0x00,         /*iConfiguration: Index of string descriptor describing
   the configuration*/
@@ -210,6 +210,18 @@ __ALIGN_BEGIN static uint8_t USBD_HID_CDC_CfgDesc[USB_HID_CDC_CONFIG_DESC_SIZ] _
   0x0A,          /*bInterval: Polling Interval (10 ms)*/
   /* 34 */
 
+  /******** /IAD should be positioned just before the CDC interfaces ******
+               IAD to associate the two CDC interfaces */
+
+  0x08, /* bLength */
+  0x0B, /* bDescriptorType */
+  0x01, /* bFirstInterface */
+  0x02, /* bInterfaceCount */
+  0x02, /* bFunctionClass */
+  0x02, /* bFunctionSubClass */
+  0x01, /* bFunctionProtocol */
+  0x00, /* iFunction (Index of string descriptor describing this function) */
+
    /*Interface Descriptor */
   0x09,   /* bLength: Interface Descriptor size */
   USB_INTERFACE_DESCRIPTOR_TYPE,  /* bDescriptorType: Interface */
@@ -220,7 +232,7 @@ __ALIGN_BEGIN static uint8_t USBD_HID_CDC_CfgDesc[USB_HID_CDC_CONFIG_DESC_SIZ] _
   0x02,   /* bInterfaceClass: Communication Interface Class */
   0x02,   /* bInterfaceSubClass: Abstract Control Model */
   0x01,   /* bInterfaceProtocol: Common AT commands */
-  0x01,   /* iInterface: */
+  0x00,   /* iInterface: */
 
   /*Header Functional Descriptor*/
   0x05,   /* bLength: Endpoint Descriptor size */
diff --git a/src/main/target/WORMFC/target.h b/src/main/target/WORMFC/target.h
index cb503e072..4dd704d6a 100644
--- a/src/main/target/WORMFC/target.h
+++ b/src/main/target/WORMFC/target.h
@@ -67,7 +67,7 @@
 
 #define USE_VCP
 #define USB_MSC
-#define MSC_BUTTON              PB2
+#define USB_CDC_HID
 #define VBUS_SENSING_PIN        PA9
 #define VBUS_SENSING_ENABLED
 
diff --git a/src/main/target/common_fc_pre.h b/src/main/target/common_fc_pre.h
index 63835adbc..af947f4fc 100644
--- a/src/main/target/common_fc_pre.h
+++ b/src/main/target/common_fc_pre.h
@@ -51,7 +51,6 @@
 #define USE_GYRO_DATA_ANALYSE
 #define USE_ADC
 #define USE_ADC_INTERNAL
-#define USB_CDC_HID
 
 #if defined(STM32F40_41xxx) || defined(STM32F411xE)
 #define USE_OVERCLOCK
diff --git a/src/main/vcpf4/usbd_desc.c b/src/main/vcpf4/usbd_desc.c
index 768e2928d..e117cbd7b 100644
--- a/src/main/vcpf4/usbd_desc.c
+++ b/src/main/vcpf4/usbd_desc.c
@@ -52,7 +52,11 @@
 
 #define USBD_VID                        0x0483
 
+#ifdef USB_CDC_HID
+#define USBD_PID                        0x3256
+#else
 #define USBD_PID                        0x5740
+#endif
 
 /** @defgroup USB_String_Descriptors
   * @{
@@ -116,6 +120,26 @@ USBD_DEVICE USR_desc =
     #pragma data_alignment=4
   #endif
 #endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+#ifdef USB_CDC_HID
+/* USB Standard Device Descriptor */
+__ALIGN_BEGIN uint8_t USBD_DeviceDesc[USB_SIZ_DEVICE_DESC] __ALIGN_END =
+  {
+    0x12,                                  /*bLength */
+    USB_DEVICE_DESCRIPTOR_TYPE,            /*bDescriptorType*/
+    0x00, 0x02,                            /*bcdUSB */
+    0xEF,                                  /*bDeviceClass*/
+    0x02,                                  /*bDeviceSubClass*/
+    0x01,                                  /*bDeviceProtocol*/
+    USB_OTG_MAX_EP0_SIZE,                  /*bMaxPacketSize*/
+    LOBYTE(USBD_VID), HIBYTE(USBD_VID),    /*idVendor*/
+    LOBYTE(USBD_PID), HIBYTE(USBD_PID),    /*idProduct*/
+    0x00, 0x02,                            /*bcdDevice rel. 2.00*/
+    USBD_IDX_MFC_STR,                      /*Index of manufacturer  string*/
+    USBD_IDX_PRODUCT_STR,                  /*Index of product string*/
+    USBD_IDX_SERIAL_STR,                   /*Index of serial number string*/
+    USBD_CFG_MAX_NUM                       /*bNumConfigurations*/
+  } ; /* USB_DeviceDescriptor */
+#else
 /* USB Standard Device Descriptor */
 __ALIGN_BEGIN uint8_t USBD_DeviceDesc[USB_SIZ_DEVICE_DESC] __ALIGN_END =
   {
@@ -134,6 +158,7 @@ __ALIGN_BEGIN uint8_t USBD_DeviceDesc[USB_SIZ_DEVICE_DESC] __ALIGN_END =
     USBD_IDX_SERIAL_STR,                   /*Index of serial number string*/
     USBD_CFG_MAX_NUM                       /*bNumConfigurations*/
   } ; /* USB_DeviceDescriptor */
+#endif
 
 #ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
   #if defined ( __ICCARM__ ) /*!< IAR Compiler */