How to use or to reference the Usbser.sys driver from universal serial bus (USB) modem .inf files (837637)


The information in this article applies to:

  • Microsoft Windows 2000 Driver Development Kit (DDK)
  • Microsoft Windows XP Driver Development Kit (DDK)
  • Microsoft Windows Server 2003 Driver Development Kit (DDK)

SUMMARY

Universal serial bus (USB) modem .inf files can both use the Usbser.sys driver and directly reference the Usbser.sys driver from the .inf file. However, we do not recommend this.

Instead, we recommend the following:
  • Drivers that are distributed with the operating system use the Usbser.sys driver.
  • Drivers that are not distributed with the operating system use the Include directive or the Needs directive. The Include directive is described in the "More Information" section.

MORE INFORMATION

To reference the Usbser.sys driver in all the products that are listed in the "Applies to" section, we recommend that USB modem .inf files reference the Mdmcpq.inf file.

For example, the DDInstall section of an .inf file uses the Include directive and may be similar to the following:
[DDInstall.NT]
include=mdmcpq.inf
CopyFiles=FakeModemCopyFileSection 

[DDInstall.NT.Services]
include=mdmcpq.inf
AddService=usbser, 0x00000000, LowerFilter_Service_Inst 

[DDInstall.NT.HW]
include=mdmcpq.inf
AddReg=LowerFilterAddReg
The following sections appear in the Mdmcpq.inf file in all the products that are listed in the "Applies to" section:
  • FakeModemCopyFileSection
  • LowerFilter_Service_Inst
  • LowerFilterAddReg

REFERENCES

For more information, see the "Device Installation" topic in the Microsoft Windows Driver Development Kit documentation.
Modification Type:MajorLast Reviewed:11/12/2004
Keywords:kbhowto kbnetwork KB837637 kbAudDeveloper
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