Drivers Microsoft Multifunction Devices

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Supported Devices and Features: This driver supports the following network adapters: HP NC522SFP Dual Port 10GbE Server Adapter HP NC522m Dual Port 10GbE Multifunction BL-c Adapter HP NC375i Integrated Quad Port Multifunction Gigabit Server Adapter HP NC375i 1G w/NC524SFP 10G Module; HP NC375T PCI Express Quad Port Gigabit Server Adapter.

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For a multifunction device on a PnP ISA, USB, or IEEE 1394 bus, the parent bus driver enumerates the individual functions if the device conforms to the bus standard.

Drivers Microsoft Multifunction Devices

Drivers Microsoft Multifunction Devices Manual

For such a device, the parent bus driver manages the fact that there is more than one device residing at a single bus location. To the rest of the system, the individual functions operate like independent devices.

Vendors of this type of multifunction device must do the following:

  • Ensure that the device conforms to the specification for the bus on which the device will reside.

  • Provide a PnP function driver for each function of the device.

    Since the system-supplied bus driver handles the multifunction semantics, the function drivers can be the same drivers that are used when the functions are packaged as individual devices.

  • Provide an INF file for each function of the device.

    The INF files can be the same files that are used when the functions are packaged as a individual devices. The INF files do not need any special multifunction semantics.

  • In Internet Explorer, click Tools, and then click Internet Options. On the Security tab, click the Trusted Sites icon. Click Sites and then add these website addresses one at a time to the list: You can only add one address at a time and you must click Add after each one.
  • If a 16-bit PC Card device implements the PC Card multifunction standard completely and correctly, the vendor of such a device has minimal INF and driver requirements to ensure that the device is configured properly on an NT-based system. See Supporting PC Cards That Conform to the Multifunction Standard for more information.
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Drivers Microsoft Multifunction Devices Wireless

Drivers Microsoft Multifunction Devices

A multifunction device occupies one location on its parent bus but contains more than one function. Combination printer/scanner/fax devices and modem/network cards are common multifunction devices.

Drivers Microsoft Multifunction Devices Windows 10

Drivers microsoft multifunction devices driver

In a multifunction device, the individual functions are independent. This means the functions must have the following characteristics:

  • The functions cannot have start-order dependencies.

  • The resource requirements for one function cannot be expressed in terms of the resources of another function (for example, function1 uses I/O port x and function2 uses port x + 200).

  • Each function must be able to operate as a separate device, even if it is serviced by the same drivers as another function.

  • Each function on the device must be enumerated.

  • Resource requirements for each function must be communicated to the PnP manager.

  • There must be INF files and drivers for each function.

The component responsible for each of these tasks depends on the multifunction standard for the device's parent bus, the extent to which the device conforms to the standard, and the capabilities of the parent bus driver.

Drivers Microsoft Multifunction Devices

If the device complies with the multifunction standards for its bus, your driver requirements are significantly reduced. Industry-wide multifunction standards have been defined for the PC Card and PCI buses.

Drivers Microsoft Multifunction Devices Wireless

If you are working with a multifunction DVD/CD-ROM device used for data storage (not for audio/video playback), you should use the system-supplied WDM DVD class driver, which treats the device as a single logical unit.

Drivers Microsoft Multifunction Devices

For a multifunction device that combines other functionality, you can use a system-supplied driver and INF file if the device complies with the multifunction standards for its bus. The system supplied multifunction driver (mf.sys) can handle the bus-level enumeration and resource allocation requirements for the device, and the system-supplied INF (mf.sys) can install the multifunction device. You need to supply only a function driver and INF file for each of the individual device functions.

If the device does not comply with the standard for its bus, you might need to supply a driver equivalent to mf.sys in functionality, in addition to function drivers and INF files for the device functions.

To install a multifunction device, you typically provide a base INF file for the device and an additional INF file for each of the device's functions. The base INF file typically copies the INF files for the device's individual functions. For information about how to accomplish this, see Copying INFs.

The following sections describe driver and installation requirements for various types of multifunction devices:

See INF File Sections and INF File Directives for information about INF file syntax.

Drivers Microsoft Multifunction Devices Scanner

The Windows Driver Kit (WDK) includes a separate section that describes how to support multifunction audio devices.