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USB defines class code information that is used to identify a device's functionality and to nominally load a device driver based on that functionality.

2024/1/17 -This section provides information about device, configuration, interface, and endpoint descriptors and ways to retrieve them from a USB device.

2024/1/17 -USB interface association descriptor (IAD) allows the device to group interfaces that belong to a function.

2025/5/23 -USB defines class code information that is used to identify a device's functionality and to nominally load a device driver based on that functionality.

The Interface Descriptor (USB_INTERFACE_DESCRIPTOR) defines the collection of endpoints. This interface supports a group of pipes that are suitable for a ...

2003/7/23 -The first functional association includes two interfaces (including all class-specific descriptors and alternate settings). The second device ...

Get the USB device descriptor for a given device. This is a non-blocking function; the device descriptor is cached in memory.

Get the USB device descriptor for a given device. This is a non-blocking function; the device descriptor is cached in memory.

2025/5/20 -A Descriptor contains information like type of the device, Vendor ID, Compliant USB Version, number of configurations device supports, number of endpoints, etc.