Dell Support Drivers & Downloads Driver File Formats

Driver Details

Conexant D400 External USB 56K Modem Utility
This package provides the Conexant D400 External USB 56K Modem Utility and is supported on Inspiron, OptiPlex, Vostro and Latitude models that are running the following Windows Operating Systems: XP, Vista and Windows 7.
Release Date 10/12/2009
Importance: Recommended
Version: DLD1.21,A00

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: 3MB

Previous Versions

No previous version available.


This package provides the Conexant D400 External USB 56K Modem Utility and is supported on Inspiron, OptiPlex, Vostro and Latitude models that are running the following Windows Operating Systems: XP, Vista and Windows 7.

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 1210
Inspiron 13 N3010
Inspiron 1318
Inspiron 1370
Inspiron 13z (N311Z)
Inspiron 13z N301Z
Inspiron 14 (1440)
Inspiron 14 (N4050)
Inspiron 14 AMD M4040
Inspiron 14 Intel (N4020)
Inspiron 14 N4030
Inspiron 14 N4120
Inspiron 1440
Inspiron 1464
Inspiron 1470
Inspiron 14R (N4010)
Inspiron 14R (N4110)
Inspiron 14z (1470)
Inspiron 14z (N411z)
Inspiron 15 (1564)
Inspiron 15 (M5030)
Inspiron 15 (N5030)
Inspiron 15 (N5040)
Inspiron 15 (N5050)
Inspiron 1546
Inspiron 1570
Inspiron 15R N5110
Inspiron 15z (1570)
Inspiron 17 (N7010)
Inspiron 1764
Inspiron 17R N7110
Inspiron m301z AMD
Inspiron M411R
Inspiron M5040
Inspiron M511R
Inspiron Mini 10v
Inspiron Mini 10v N
Inspiron Mini 12
Inspiron Mini 9
Inspiron N3110
Inspiron N4120
Inspiron Zino
Inspiron Zino HD
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 XT
Latitude XT2
Latitude XT3
OptiPlex 3010
OptiPlex 390
Precision M4700
Precision M6500
Precision M6700
Studio 1435
Studio 1450
Studio 1457
Studio 1458
Studio 15 (1555)
Studio 1535
Studio 1536
Studio 1537
Studio 1555
Studio 1557
Studio 1558
Studio 1569
Studio 15z
Studio 1735
Studio 1737
Studio 1747
Studio 1749
Studio XPS 13
Studio XPS 16
Studio XPS 1647
Studio XPS 435 MT
Studio XPS 435t / 9000
Vostro 1011
Vostro 1310
Vostro 1440
Vostro 1450
Vostro 1510
Vostro 1540
Vostro 1550
Vostro 1710
Vostro 2510
Vostro 3350
Vostro 3450
Vostro 3550
Vostro 3555
Vostro 3750
Vostro V131
XPS 15 (L501X, Late 2010)
XPS 15 (L502X, Early 2011)
XPS 17 (L701X, Late 2010)
XPS 17 (L702X, Early 2011)
XPS M1330 (M1330, Mid 2007)
XPS M1530 (M1530, Late 2007)
Operating Systems
MS Windows 7 32-bit
MS Windows 7 64-bit
MS Windows Vista 32-bit
MS Windows Vista 64-bit
MS Windows XP
MS Windows XP x64

Applies to

  • Conexant D400 External USB 56K Modem

Fixes & Enhancements

Initial Release

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\DPP14". (Where 'DPP14' 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\DPP14" (where 'DPP14' is the name of the file) in the Open textbox and then click OK.
8. Follow the on-screen installation instructions.            


To ensure the integrity of your download, please verify the checksum value.

This is an optional process and is not required for the downloading and installation of device drivers from this site.

By downloading, you accept the terms of the Dell Software License Agreement.