Descriptor type. Will have value * \ref libusb_descriptor_type::LIBUSB_DT_DEVICE_CAPABILITY * LIBUSB_DT_DEVICE_CAPABILITY in this context.
Capability type. Will have value * \ref libusb_capability_type::LIBUSB_BT_USB_2_0_EXTENSION * LIBUSB_BT_USB_2_0_EXTENSION in this context.
Size of this descriptor (in bytes)
Bitmap encoding of supported device level features. * A value of one in a bit location indicates a feature is * supported; a value of zero indicates it is not supported. * See \ref libusb_usb_2_0_extension_attributes.
A structure representing the USB 2.0 Extension descriptor This descriptor is documented in section 9.6.2.1 of the USB 3.0 specification. All multiple-byte fields are represented in host-endian format.