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Driver Details

Conexant D400 External USB Modem Driver
This package provides the Conexant D400 External USB Modem Driver and is supported on Inspiron, Latitude, OptiPlex and Vostro models that are running the following Operating System: Vista.
Release Date 12/2/2009
Importance: Recommended
Version: Drv_Vista32_V2.0.19.51,A07

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.


This package provides the Conexant D400 External USB Modem Driver and is supported on Inspiron, Latitude, OptiPlex and Vostro models that are running the following Operating System: Vista.

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 11z (1110)
Inspiron 1318
Inspiron 1370
Inspiron 13z N301Z
Inspiron 14 (1440)
Inspiron 14 Intel (N4020)
Inspiron 14 N4030
Inspiron 1440
Inspiron 1464
Inspiron 1470
Inspiron 14z (1470)
Inspiron 15 (M5030)
Inspiron 15 (N5030)
Inspiron 15 3520
Inspiron 1545
Inspiron 1546
Inspiron 1570
Inspiron 15z (1570)
Inspiron 1750
Inspiron m301z AMD
Inspiron Mini 10
Inspiron Mini 1012
Inspiron Mini 10v
Inspiron Mini 10v N
Inspiron Zino HD 410
Latitude 13
Latitude E4310
Latitude E5410
Latitude E5510
Latitude E6220
Latitude E6230
Latitude E6320
Latitude E6330
Latitude E6430 ATG
Latitude E6430s
Latitude E7240
Latitude E7440
Latitude XT2
OptiPlex 3010
OptiPlex 390
Precision M4700
Precision M6400
Precision M6700
Studio 1450
Studio 1457
Studio 1458
Studio 15 (1555)
Studio 1555
Studio 1569
Studio 15z
Studio XPS 13
Studio XPS 16
Studio XPS 1645
Studio XPS 1647
Vostro 1011
Vostro 1450
Vostro 1550
Vostro 2520
Vostro 3300
Vostro 3350
Vostro 3400
Vostro 3450
Vostro 3500
Vostro 3550
Vostro 3700
Vostro 3750
Operating Systems
MS Windows Vista 32-bit

Applies to

  • Conexant D400 External USB 56K Modem

Fixes & Enhancements

Fixes - Fixed the translation mistake of the word "Task" in the Universal Installer GUI. 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\MYYHY". (Where 'MYYHY' 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\MYYHY" (where 'MYYHY' 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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This is an optional process and is not required for the downloading and installation of device drivers from this site.

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