Usb Driver Composite Device

1/6/2010. The USB Function Composite device driver allows any USB Function client driver to work simultaneously with other USB Function client drivers.

• Download the latest drivers for your USB Composite Device to keep your Computer up-to-date.
• The bus driver also reports a compatible identifier ID of USB COMPOSITE, if the device meets the following requirements: The device class field of the device.

Usb composite device free download - USB Mass Storage Device, SAMSUNG USB Composite Device, USB Network Gate, and many more programs.

A USB composite device is a single device that provides multiple functions, such as a combined keyboard and mouse device. These devices require a driver in order to.

When a new USB device is connected to a host machine, the USB bus driver creates a physical device object PDO for the device and generates a PnP event to report the new PDO. The operating system then queries the bus driver for the hardware IDs associated with the PDO.

For all USB devices, the USB bus driver reports a device ID with the following format:

Note  xxxx and yyyy are taken directly from idVendor and idProduct fields of the device descriptor, respectively.

The bus driver also reports a compatible identifier ID of USB COMPOSITE, if the device meets the following requirements:

The device class field of the device descriptor bDeviceClass must contain a value of zero, or the class bDeviceClass, subclass bDeviceSubClass, and protocol bDeviceProtocol fields of the device descriptor must have the values 0xEF, 0x02 and 0x01 respectively, as explained in USB Interface Association Descriptor.

The device must have multiple interfaces.

The device must have a single configuration.

The bus driver also checks the device class bDeviceClass, subclass bDeviceSubClass, and protocol bDeviceProtocol fields of the device descriptor. If these fields are zero, the device is a composite device, and the bus driver reports an extra compatible identifier ID of USB COMPOSITE for the PDO.

After retrieving the hardware and compatible IDs for the new PDO, the operating system searches the INF files. If one of the INF files contains a match for the device ID, Windows loads the driver that is indicated by that INF file and the generic parent driver does not come into play. If no INF file contains the device ID, and the PDO has a compatible ID, Windows searches for the compatible ID. This produces a match in Usb.inf and causes the operating system to load the USB Generic Parent Driver Usbccgp.sys.

If you want the generic parent driver to manage your device, but your device does not have the characteristics necessary to ensure that the system will generate a compatible ID of USB COMPOSITE, you will have to provide an INF file that loads the generic parent driver. The INF file should contain a needs/includes section that references Usb.inf.

If your composite device has multiple configurations, the INF file you provide must specify which configuration the generic parent should use in the registry. The necessary registry keys are described in Configuring Usbccgp.sys to Select a Non-Default USB Configuration.

USB Generic Parent Driver Usbccgp.sys

Microsoft-provided USB drivers

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Enumeration of USB Composite Devices

The package provides the installation files for SAMSUNG Mobile USB Composite Device Driver version 2.11.7.0. In order to manually update your driver, follow the.