Diamond Flower (DFI) INFINITY KT400A Driver Download (Official)

Diamond Flower (DFI) Drivers Audio Drivers Sound Card Drivers
Diamond Flower (DFI) INFINITY KT400A Driver Download (Official)
7 Ratings

Supported Models


C-Media AC97 Audio Device Driver


Diamond Flower (DFI)


Supported Operating Systems

Windows XP, Windows 2000

File Name

CMedia_WDM.zip (2.7 MB)


031216 (16-Dec-2003) (2003-02-27) via .inf (2003-02-18) via .inf (2003-02-21) via .inf

Find Related Drivers

Uploader Notes


Audio Driver for C-media 9739 Under Windows 2K & XP.

Uploaded By

Jegadesh (DG Staff Member) on 17-Jan-2007

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
WDM/AUDIO3D.DLL 712.7 KB 22 Nov 2001
WDM/CM5451.CAT 88.7 KB 5 Nov 2002
WDM/CM5451.INF 10.3 KB 18 Feb 2003
WDM/CM5455.CAT 88.7 KB 5 Nov 2002
WDM/CM5455.INF 10.1 KB 18 Feb 2003
WDM/CM686.CAT 88.7 KB 5 Nov 2002
WDM/CM686.INF 10.4 KB 18 Feb 2003
WDM/CMICH5.CAT 12.2 KB 2 Mar 2003
WDM/CMICH5.INF 12.0 KB 26 Feb 2003
WDM/CMICHX.INF 31.0 KB 17 Feb 2003
WDM/CMICNFG.CPL 852.0 KB 23 Feb 2003
WDM/CMIDS3D.DLL 917.5 KB 28 Apr 2002
WDM/CMIRMDRV.DLL 28.7 KB 18 Feb 2003
WDM/CMIRMDRV.EXE 229.4 KB 20 Feb 2003
WDM/CMIWCNFG.DLL 1.9 MB 19 Feb 2003
WDM/CMNVDA.CAT 88.7 KB 5 Nov 2002
WDM/CMNVDA.INF 10.8 KB 21 Feb 2003
WDM/CMSIS.INF 29.3 KB 21 Feb 2003
WDM/CMUDA.CAT 101.2 KB 3 Mar 2003
WDM/CMUDA.DLL 65.5 KB 25 Feb 2003
WDM/CMUDA.SYS 740.0 KB 25 Feb 2003
WDM/CMVIA.INF 25.1 KB 26 Feb 2003
WDM/UDAPROP.DLL 32.8 KB 15 Feb 2003

How to Update INFINITY KT400A Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the INFINITY KT400A driver, click the green download button above. After you complete your download, move on to Step 2.

If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter INFINITY KT400A into the search box above and then submit. In the results, choose the best match for your PC and operating system.

Tech Tip: If you are having trouble deciding which is the right driver, try the Driver Update Utility for INFINITY KT400A. It is a software utility which automatically finds and downloads the right driver.

To find the newest driver, you may need to visit the Diamond Flower (DFI) website. Many major device manufacturers update their drivers regularly.

Step 2 - Install Your Driver

Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.

How to Open Device Manager

  • In Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager

  • In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager

  • In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager

  • In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager

  • In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button

How to Install a driver from Device Manager

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. Click the Update Driver button and follow the instructions.

In most cases, you will need to reboot your computer in order for the driver update to take effect.

Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.

For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.

This website is not affiliated with Diamond Flower (DFI). All company names/logos are properties of their owners.
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