UsbControlTransferType UsbControlTransferType UsbControlTransferType UsbControlTransferType UsbControlTransferType Enum


Defines constants that indicate the type of USB control transfer: standard, class, or vendor.

public : enum class UsbControlTransferType
enum class winrt::Windows::Devices::Usb::UsbControlTransferType : int32_t
public enum UsbControlTransferType
Public Enum UsbControlTransferType
var value = Windows.Devices.Usb.UsbControlTransferType.class;

Windows 10 requirements

Device family
Windows 10 (introduced v10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduced v1)


Class Class Class Class Class 1

Indicates a class-specific USB control request described by a specific device class specification.

Standard Standard Standard Standard Standard 0

Indicates a standard USB control request that the app can send to obtain information about the device, its configurations, interfaces, and endpoints. The standard requests are described in section 9.4 of the Universal Serial Bus (USB) specification (

Vendor Vendor Vendor Vendor Vendor 2

Indicates a vendor-specified USB control request and depends on the requests supported by the device.


For conceptual information about USB control transfers, see "Microsoft-defined methods for sending control transfer requests" in How to send a USB control transfer.