+#ifdef VIRTSER_ENABLE
+ USB_Descriptor_Interface_Association_t CDC_Interface_Association;
+
+ // CDC Control Interface
+ USB_Descriptor_Interface_t CDC_CCI_Interface;
+ USB_CDC_Descriptor_FunctionalHeader_t CDC_Functional_Header;
+ USB_CDC_Descriptor_FunctionalACM_t CDC_Functional_ACM;
+ USB_CDC_Descriptor_FunctionalUnion_t CDC_Functional_Union;
+ USB_Descriptor_Endpoint_t CDC_NotificationEndpoint;
+
+ // CDC Data Interface
+ USB_Descriptor_Interface_t CDC_DCI_Interface;
+ USB_Descriptor_Endpoint_t CDC_DataOutEndpoint;
+ USB_Descriptor_Endpoint_t CDC_DataInEndpoint;
+#endif