You can write a driver for these scenarios:. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Please rate your experience Yes No. Any additional feedback? Submit and view feedback for This product This page. View all page feedback. In this article. Write a UCSI client driver. Do not use. The request retrieves the highest port number on the hub. Do not send this request to the root hub.
The request also retrieves the speed capability of the port. See Table , Offset These states correspond to the USB device states as defined in section 9.
The EnumLogEntry routine makes a log entry. UcmConnectorCreate Creates a connector object. UcmTcpciPortControllerStart Indicates to the UcmTcpciCx class extension that the client driver is now ready to service hardware requests for the port controller. UcmUcsiPpmStart Instructs the class extension to start sending requests to the client driver. UcmUcsiPpmStop Instructs the class extension to stop sending requests to the client driver.
The client driver calls this function before calling UcxEndpointCreate method to create an endpoint and register its callback functions with UCX. UcxControllerCreate Creates a host controller object. UcxControllerSetIdStrings Updates the identifier strings of a controller after the controller has been initialized. UcxStaticStreamsCreate Creates a static streams object. This applies to virtual USB 3. UdecxUsbEndpointInitSetEndpointAddress Sets the address of the endpoint in the initialization parameters of the simple endpoint to create.
UfxDeviceCreate Creates a UFX device object, registers event callback routines, and specifies capabilities specific to the controller. UfxEndpointCreate Creates an endpoint object. UrsDeviceInitialize Initializes a framework device object to support operations related to a USB dual-role controller and registers the relevant event callback functions with the USB dual-role controller class extension. UrsDeviceInitInitialize Learn how this function initializes device initialization operations when the Plug and Play PnP manager reports the existence of a device.
The request opens streams associated with the specified bulk endpoint. The routine registers the client driver with the underlying USB driver stack. The properties are static information that do not change during the lifecycle of a connector.
Unlike connector properties, state information is dynamic, which can change at runtime. Properties are static information that do not change during the lifecycle of a hub. For information about these members, see the Power Delivery specification. See Table See Bit in Table Today, many different USB devices connect to your computer. The list below contains a few of the most common. USB connectors come in different shapes and sizes. Further information on each type is provided below.
Mini-USB , also known as mini-B , is used with digital cameras and computer peripherals. Micro-USB cables are often used to connect computer peripherals, video game controllers , and for charging smartphones. Unlike other forms of USB connections, USB-C cables are reversible, meaning they plug in correctly regardless of whether or not they are "upside down. In addition to charging batteries and transferring data, USB-C cables can display video. USB 1. USB 2.
USB 3. It provides two unidirectional data paths for receiving and sending data at the same time. Following the release of USB 3. Dell began including USB 3. Today, many devices use USB 3. Each USB port version is backward compatible and forward compatible , meaning it can support any version below or above its current number.
For example, devices designed with USB 1. However, it should be noted that devices with lower versions run at their native transfer speeds even though USB 3. Similarly, if you connect a USB 3.
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