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Driver Details

Conexant D400,External USB 56K Modem, v.drv_Vista32_V2.0.15.51, A02
Conexant D400 External USB 56K Modem Vista32 Driver V2.0.15.51
Release Date 12/12/2007
Importance: Recommended
Version: drv_Vista32_V2.0.15.51,A02

The following formats are available for the file you have selected

File Format: Hard-Drive Download File Download File
File Name:


Description: This file contains a compressed (or zipped) set of files. Download the file to a folder on your hard drive, and then run (double-click) it to unzip the set of files. Follow the instructions to complete the installation.
Download Type: HTTP
File Size: 1MB

Previous Versions

No previous version available.


Conexant D400 External USB 56K Modem Vista32 Driver V2.0.15.51

Level of Importance:Recommended

Dell recommends applying this update during your next scheduled update cycle. The update contains feature enhancements or changes that will help keep your system software current and compatible with other system modules (firmware, BIOS, drivers and software).

Important Information

With WHQL signed


Latitude XT
Operating Systems
MS Windows Vista 32-bit

Applies to

  • Conexant D400 External USB 56K Modem

Fixes & Enhancements

Fixes: Universal CoInstaller 1.When modem is reinstalled ,'Found New HW Wizard' window prompts on dual byte language supported OS 2.CoInstaller will now reset the device when a driver upgrade is completed to ensure that new driver installation is successful. 3.If there are multiple INFs with the same PNP ID in the package. The CoInstaller chooses the most appropriate INF to install based on it being signed and having the highest version. 4.When the driver is upgraded and the INF name differs to the existing one installed, there will be two folders on the system. This was fixed by removing the old one and keeping the current one only. 5.Feature to install certain parts of an INI based on its PNP ID 6.Windows permits to have more than one AddReg or CopyFile entry in a section. It was assumed only one such entry is in a section is permitted. This was fixed by removing this limitation. Universal Installer/Uninstaller 1.Sometimes GUI reports success on a failed installation Digital Call Progress 1.No call progress when system resumes from Hibernation state 2.Intermittent system lock during uninstallation of modem drivers on Windows 2000 3.Fixed possible driver verifier crash (reason IRP_URB_DOUBLE_SUBMIT)

Installation instructions

Custom Instructions for R170498.EXE: 

Hard Drive Installation (via WinZip) with Setup.exe File for R170498.EXE


1.Click Download Now, to download the file.
2.When the File Download window appears, click Save (Windows XP 
users will click Save) this program to disk and click OK.  The Save In: 
window appears. 
3.From the Save In: field, click the down arrow then click to 
select Desktop and click Save.  The file will download to your desktop.
4.If the Download Complete window appears, click Close.  The file 
icon appears on your desktop.


1.Plug USB MODEM to an available USB port.
2.Double-click the new icon on the desktop labeled R170498.EXE.
3.The Self-Extracting window appears and prompts you to extract or 
unzip to C:\DELL\DRIVERS\R170498. Write down this path so the executable (I.e. 
Setup.exe) file can be found later.
4.The Self-Extractor window appears.
5.Click OK.
6.After completing the file extraction, if the Self-Extractor 
window is still open, close it.
7.Click the Start button and then click Run.
8.Type C:\DELL\DRIVERS\R170498 in the Open textbox and then click OK.
9.Follow the on-screen installation instructions.            


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