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Driver Details

Conexant D400 External USB 56K Modem Driver
This package provides the Conexant D400 External USB 56K Modem Driver and is supported on Vostro, Inspiron, Latitude and OptiPlex models that are running the following Windows Operating System: Windows 7 (32-bit).
Release Date 5/31/2011
Importance: Recommended
Version: Drv_Win7-32_2.0.22.0,A02 See Previous Versions

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

Drv_Win7-32_2.0.20.0, A01
<ul><li><b>Vendor Version :</b> Drv_Win7-32_2.0.20.0</li><li><b>Dell Version :</b> A01</li></ul>
7/30/2010 2:02:50 AM


This package provides the Conexant D400 External USB 56K Modem Driver and is supported on Vostro, Inspiron, Latitude and OptiPlex models that are running the following Windows Operating System: Windows 7 (32-bit).

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).


Inspiron 10z (1120)
Inspiron 11z (1110)
Inspiron 11z Intel (1120)
Inspiron 14 (N4050)
Inspiron 14 AMD M4010
Inspiron 14 AMD M4040
Inspiron 14 Intel (N4020)
Inspiron 14 N4030
Inspiron 14 N4120
Inspiron 14R (N4110)
Inspiron 15 (M5030)
Inspiron 15 (N5030)
Inspiron 15 (N5040)
Inspiron 15 (N5050)
Inspiron 15R N5110
Inspiron 17R N7110
Inspiron 620
Inspiron 620s
Inspiron M5040
Inspiron M511R
Inspiron Mini 1012
Inspiron N3110
Inspiron N4120
Inspiron Zino HD 410
Latitude 13
Latitude E4200
Latitude E4300
Latitude E4310
Latitude E6230
Latitude E6330
Latitude E6430 ATG
Latitude E6430s
Latitude E7240
Latitude E7440
Latitude XT2
OptiPlex 3010
OptiPlex 390
Precision M4700
Precision M6400
Precision M6500
Precision M6700
Studio 1569
Studio 15z
Studio XPS 435t / 9000
Vostro 130
Vostro 1440
Vostro 1450
Vostro 1540
Vostro 1550
Vostro 3300
Vostro 3350
Vostro 3400
Vostro 3450
Vostro 3500
Vostro 3550
Vostro 3555
Vostro 3700
Vostro 3750
Vostro 460
Vostro V131
Operating Systems
MS Windows 7 32-bit

Applies to

  • Conexant D400 External USB 56K Modem

Fixes & Enhancements

Fixes - Fixed the issue that unable to send or receive fax via Microsoft Fax. Enhancements - Not Applicable.

Installation instructions

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


1.Click Download File, to download the file.
2. When the File Download window appears, click Save or 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.Double-click the new icon on the desktop.
2.The Self-Extracting window appears and prompts you to extract or unzip to "C:\DELL\DRIVERS\DDK3R". (Where 'DDK3R' is the name of the file to be downloaded). Write down this path so the executable (I.e.Setup.exe) file can be found later.
3. The Self-Extractor window appears.
4. Click OK.
5. After completing the file extraction, if the Self-Extractor window is still open, close it.
6. Click Start button and then click Run.
7. Type "C:\DELL\DRIVERS\DDK3R" (where 'DDK3R' is the name of the file) in the Open textbox and then click OK.
8. Follow the on-screen installation instructions.            


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