ECS K7S5A Driver Download

ECS Elitegroup Drivers

The K7S5A is an audio device manufactured by ECS Elitegroup. This driver fixes problems with no sound or static or distorted sound, and can unlock advanced features of your audio device. Visitors have downloaded this file "" 46,228 times with an aggregate rating of 5 out of 5 stars based on 250 reviews. Our users report success installing this driver update on PCs running Windows XP. The total disk space used for this update is 8.3 MB.

250 Ratings (see all reviews)

Supported Models


C-Media 9738 AC97 CODEC

C-Media AC97 Audio Device

CMI8738/C3DX PCI Audio Device




Supported Operating Systems

Windows 2003, Windows XP, Windows 2000, Windows NT4, Windows ME, Windows 98SE, Windows 98, Windows 95

File Name

Versions (2002-01-08) via .inf (2001-12-19) via .inf

Additional Notes

Used on NT4 W/stn, but zip includes all Windows 95/98/ME etc, On board sound for K7S5A.

Uploaded By

Mike Walker (DG Member) on 18-Jun-2002

Most Helpful Reviews

6 of 7 people found the following review helpful:
Tested on Windows XP
28 Feb 2007

Installation:  out of 5
Stability:  out of 5
Compatibility:  out of 5
"Works excellent.Easy instalation, not like manufactor's site"
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4 of 5 people found the following review helpful:
Dane Kingsbury
Tested on Windows 98SE
2 May 2007

Installation: 2 out of 5
Stability: 2 out of 5
Compatibility: 2 out of 5
"Mother board was just a drive you crazy unit. Fially trashed it for new upgrade. Thanks however for you work."
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4 of 5 people found the following review helpful:
Tested on Windows XP
1 Feb 2007

Installation: 4 out of 5
Stability: 4 out of 5
Compatibility: 4 out of 5
"the driver was ok....cheers"
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See all ECS K7S5A ratings and reviews

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
readme.txt 479 bytes 8 Jan 2002
Win_2K/drv/AUDIO3D.DLL 712.7 KB 23 Nov 2001
Win_2K/drv/CMUDA.INF 31.4 KB 27 Dec 2001
Win_2K/drv/UDAPROP.DLL 28.7 KB 24 Sep 2001
Win_2K/drv/CRLDS3D.DLL 766.0 KB 20 Oct 2000
Win_2K/drv/CMUDA.CAT 43.6 KB 7 Jan 2002
Win_2K/drv/CMICNFG.CPL 426.0 KB 7 Dec 2001
Win_2K/drv/CMUDA.SYS 370.7 KB 7 Dec 2001
Win_98SE/drv/AUDIO3D.DLL 712.7 KB 23 Nov 2001
Win_98SE/drv/CMUDA.INF 31.4 KB 27 Dec 2001
Win_98SE/drv/UDAPROP.DLL 28.7 KB 24 Sep 2001
Win_98SE/drv/CRLDS3D.DLL 766.0 KB 20 Oct 2000
Win_98SE/drv/CMUDA.CAT 43.2 KB 7 Jan 2002
Win_98SE/drv/CMICNFG.CPL 426.0 KB 7 Dec 2001
Win_98SE/drv/CMUDA.SYS 370.7 KB 7 Dec 2001
Win_ME/drv/AUDIO3D.DLL 712.7 KB 23 Nov 2001
Win_ME/drv/CMUDA.INF 31.4 KB 27 Dec 2001
Win_ME/drv/UDAPROP.DLL 28.7 KB 24 Sep 2001
Win_ME/drv/CRLDS3D.DLL 766.0 KB 20 Oct 2000
Win_ME/drv/CMUDA.CAT 43.6 KB 7 Jan 2002
Win_ME/drv/CMICNFG.CPL 426.0 KB 7 Dec 2001
Win_ME/drv/CMUDA.SYS 370.7 KB 7 Dec 2001
Win_98/drv/AUDIO3D.DLL 712.7 KB 23 Nov 2001
Win_98/drv/CMUDA.INF 49.2 KB 10 Jan 2002
Win_98/drv/UDAPROP.DLL 28.7 KB 24 Sep 2001
Win_98/drv/CRLDS3D.DLL 766.0 KB 20 Oct 2000
Win_98/drv/CMUDA.CAT 25.3 KB 1 Jun 2001
Win_98/drv/CMICNFG.CPL 426.0 KB 7 Dec 2001
Win_98/drv/CMUDA.SYS 386.4 KB 11 Jan 2002
Win_NT40/drv/IAC97K4.SYS 46.5 KB 10 Dec 2001
Win_NT40/drv/IAC97U4.DLL 46.5 KB 10 Dec 2001
Win_NT40/drv/OEMSETUP.INF 4.1 KB 22 Nov 2001
Win_XP/drv/AUDIO3D.DLL 712.7 KB 23 Nov 2001
Win_XP/drv/CMUDA.INF 31.4 KB 27 Dec 2001
Win_XP/drv/UDAPROP.DLL 28.7 KB 24 Sep 2001
Win_XP/drv/CRLDS3D.DLL 766.0 KB 20 Oct 2000
Win_XP/drv/CMUDA.CAT 43.6 KB 31 Dec 2001
Win_XP/drv/CMICNFG.CPL 426.0 KB 7 Dec 2001
Win_XP/drv/CMUDA.SYS 370.7 KB 7 Dec 2001
Win_9x/drv/CMI9738.INF 2.0 KB 3 Jan 2002
Win_9x/drv/CM9738.DRV 96.8 KB 3 Jan 2002
Win_9x/drv/CM9738V.VXD 45.4 KB 3 Jan 2002

How to Update K7S5A Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the K7S5A 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 ECS K7S5A 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 ECS Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.

To find the newest driver, you may need to visit the ECS website. Most 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 11, 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 ECS. All company names/logos are properties of their owners.
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