USB_INTERFACE_CLASS_CDC
if (baseClass == USB_INTERFACE_CLASS_CDC && subclass == USB_INTERFACE_SUBCLASS_ECM)
if (baseClass != USB_INTERFACE_CLASS_CDC || subclass != USB_INTERFACE_SUBCLASS_ECM)
if (descriptor->interface_class != USB_INTERFACE_CLASS_CDC
if ((descriptor->interface_class != USB_INTERFACE_CLASS_CDC