Article ID: 837637 - Last Review: November 12, 2004 - Revision: 1.0

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

View products that this article applies to.

System TipThis article applies to a different operating system than the one you are using. Article content that may not be relevant to you is disabled.

Expand all | Collapse all

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.

Back to the top

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: