Usb​Interrupt​Out​Endpoint​Descriptor Usb​Interrupt​Out​Endpoint​Descriptor Usb​Interrupt​Out​Endpoint​Descriptor Class


The endpoint descriptor for a USB interrupt OUT endpoint. The descriptor specifies the endpoint type, direction, number and also the maximum number of bytes that can be written to the endpoint, in a single transfer. The app can also get information about how often the host polls the endpoint to send data.

public : sealed class UsbInterruptOutEndpointDescriptor : IUsbInterruptOutEndpointDescriptorpublic sealed class UsbInterruptOutEndpointDescriptor : IUsbInterruptOutEndpointDescriptorPublic NotInheritable Class UsbInterruptOutEndpointDescriptor Implements IUsbInterruptOutEndpointDescriptor
Windows 10 requirements
Device family
Windows 10 (introduced v10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduced v1)


EndpointNumber EndpointNumber EndpointNumber

Gets the USB endpoint number of the interrupt OUT endpoint.

public : byte EndpointNumber { get; }public byte EndpointNumber { get; }Public ReadOnly Property EndpointNumber As byte
byte byte byte

The USB endpoint number.


Interval Interval Interval

Gets the poling interval of the USB interrupt endpoint.

public : TimeSpan Interval { get; }public TimeSpan Interval { get; }Public ReadOnly Property Interval As TimeSpan
TimeSpan TimeSpan TimeSpan

The poling interval of the USB interrupt endpoint.


MaxPacketSize MaxPacketSize MaxPacketSize

Gets the maximum number of bytes that can be sent to or received from this endpoint.

public : unsigned short MaxPacketSize { get; }public uint MaxPacketSize { get; }Public ReadOnly Property MaxPacketSize As uint
unsigned short uint uint

Indicates the maximum packet size of the endpoint. This value is the wMaxPacketSize field value of the endpoint descriptor. For information, see Table 9-13 in the Universal Serial Bus Specification (version 2.0) or Table 9-18 in the Universal Serial Bus 3.0 Specification.



The MaxPacketSize property value does not necessarily indicate the number of bytes that will be written at a time, in one interval.

Pipe Pipe Pipe

Gets the object that represents the pipe that the host opens to communicate with the interrupt OUT endpoint.

public : UsbInterruptOutPipe Pipe { get; }public UsbInterruptOutPipe Pipe { get; }Public ReadOnly Property Pipe As UsbInterruptOutPipe
UsbInterruptOutPipe UsbInterruptOutPipe UsbInterruptOutPipe

An UsbInterruptInPipe object that is the pipe for the interrupt OUT endpoint.