diff --git a/Firmware/Board/v3/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc/usbd_cdc.h b/Firmware/Board/v3/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc/usbd_cdc.h
index d937b2e8..d88fc069 100644
--- a/Firmware/Board/v3/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc/usbd_cdc.h
+++ b/Firmware/Board/v3/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc/usbd_cdc.h
@@ -58,7 +58,7 @@
 #define CDC_DATA_FS_MAX_PACKET_SIZE                 64  /* Endpoint IN & OUT Packet size */
 #define CDC_CMD_PACKET_SIZE                         8  /* Control Endpoint Packet size */ 
 
-#define USB_CDC_CONFIG_DESC_SIZ                     67
+#define USB_CDC_CONFIG_DESC_SIZ                     (67 - 19)
 #define CDC_DATA_HS_IN_PACKET_SIZE                  CDC_DATA_HS_MAX_PACKET_SIZE
 #define CDC_DATA_HS_OUT_PACKET_SIZE                 CDC_DATA_HS_MAX_PACKET_SIZE
 
diff --git a/Firmware/Board/v3/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c b/Firmware/Board/v3/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c
index 24465641..56691dd9 100644
--- a/Firmware/Board/v3/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c
+++ b/Firmware/Board/v3/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c
@@ -198,11 +198,11 @@ __ALIGN_BEGIN uint8_t USBD_CDC_CfgHSDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
   0x00,   /* bInterfaceNumber: Number of Interface */
   0x00,   /* bAlternateSetting: Alternate setting */
   0x01,   /* bNumEndpoints: One endpoints used */
-  0x02,   /* bInterfaceClass: Communication Interface Class */
-  0x02,   /* bInterfaceSubClass: Abstract Control Model */
-  0x01,   /* bInterfaceProtocol: Common AT commands */
+  0x00,   /* bInterfaceClass: Communication Interface Class */
+  0x00,   /* bInterfaceSubClass: Abstract Control Model */
+  0x00,   /* bInterfaceProtocol: Common AT commands */
   0x00,   /* iInterface: */
-  
+#if 0
   /*Header Functional Descriptor*/
   0x05,   /* bLength: Endpoint Descriptor size */
   0x24,   /* bDescriptorType: CS_INTERFACE */
@@ -229,7 +229,7 @@ __ALIGN_BEGIN uint8_t USBD_CDC_CfgHSDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
   0x06,   /* bDescriptorSubtype: Union func desc */
   0x00,   /* bMasterInterface: Communication class interface */
   0x01,   /* bSlaveInterface0: Data Class Interface */
-  
+#endif
   /*Endpoint 2 Descriptor*/
   0x07,                           /* bLength: Endpoint Descriptor size */
   USB_DESC_TYPE_ENDPOINT,   /* bDescriptorType: Endpoint */
@@ -294,11 +294,11 @@ __ALIGN_BEGIN uint8_t USBD_CDC_CfgFSDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
   0x00,   /* bInterfaceNumber: Number of Interface */
   0x00,   /* bAlternateSetting: Alternate setting */
   0x01,   /* bNumEndpoints: One endpoints used */
-  0x02,   /* bInterfaceClass: Communication Interface Class */
-  0x02,   /* bInterfaceSubClass: Abstract Control Model */
-  0x01,   /* bInterfaceProtocol: Common AT commands */
+  0x00,   /* bInterfaceClass: Communication Interface Class */
+  0x00,   /* bInterfaceSubClass: Abstract Control Model */
+  0x00,   /* bInterfaceProtocol: Common AT commands */
   0x00,   /* iInterface: */
-  
+#if 0
   /*Header Functional Descriptor*/
   0x05,   /* bLength: Endpoint Descriptor size */
   0x24,   /* bDescriptorType: CS_INTERFACE */
@@ -325,7 +325,7 @@ __ALIGN_BEGIN uint8_t USBD_CDC_CfgFSDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
   0x06,   /* bDescriptorSubtype: Union func desc */
   0x00,   /* bMasterInterface: Communication class interface */
   0x01,   /* bSlaveInterface0: Data Class Interface */
-  
+#endif
   /*Endpoint 2 Descriptor*/
   0x07,                           /* bLength: Endpoint Descriptor size */
   USB_DESC_TYPE_ENDPOINT,   /* bDescriptorType: Endpoint */
@@ -385,11 +385,11 @@ __ALIGN_BEGIN uint8_t USBD_CDC_OtherSpeedCfgDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIG
   0x00,   /* bInterfaceNumber: Number of Interface */
   0x00,   /* bAlternateSetting: Alternate setting */
   0x01,   /* bNumEndpoints: One endpoints used */
-  0x02,   /* bInterfaceClass: Communication Interface Class */
-  0x02,   /* bInterfaceSubClass: Abstract Control Model */
-  0x01,   /* bInterfaceProtocol: Common AT commands */
+  0x00,   /* bInterfaceClass: Communication Interface Class */
+  0x00,   /* bInterfaceSubClass: Abstract Control Model */
+  0x00,   /* bInterfaceProtocol: Common AT commands */
   0x00,   /* iInterface: */
-  
+#if 0
   /*Header Functional Descriptor*/
   0x05,   /* bLength: Endpoint Descriptor size */
   0x24,   /* bDescriptorType: CS_INTERFACE */
@@ -416,7 +416,7 @@ __ALIGN_BEGIN uint8_t USBD_CDC_OtherSpeedCfgDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIG
   0x06,   /* bDescriptorSubtype: Union func desc */
   0x00,   /* bMasterInterface: Communication class interface */
   0x01,   /* bSlaveInterface0: Data Class Interface */
-  
+#endif
   /*Endpoint 2 Descriptor*/
   0x07,                           /* bLength: Endpoint Descriptor size */
   USB_DESC_TYPE_ENDPOINT      ,   /* bDescriptorType: Endpoint */
diff --git a/Firmware/Board/v3/Src/usbd_desc.c b/Firmware/Board/v3/Src/usbd_desc.c
index 856d05e2..b8d6efac 100644
--- a/Firmware/Board/v3/Src/usbd_desc.c
+++ b/Firmware/Board/v3/Src/usbd_desc.c
@@ -189,8 +189,8 @@ __ALIGN_BEGIN uint8_t USBD_FS_DeviceDesc[USB_LEN_DEV_DESC] __ALIGN_END =
   0x00,                       /*bcdUSB */
 #endif /* (USBD_LPM_ENABLED == 1) */
   0x02,
-  0x02,                       /*bDeviceClass*/
-  0x02,                       /*bDeviceSubClass*/
+  0x00,                       /*bDeviceClass*/
+  0x00,                       /*bDeviceSubClass*/
   0x00,                       /*bDeviceProtocol*/
   USB_MAX_EP0_SIZE,           /*bMaxPacketSize*/
   LOBYTE(USBD_VID),           /*idVendor*/