ECS 331 Driver Download (Official)

11 Ratings

Supported Models

331 Driver

Marvell Libertas 802.11g/b Wireless LAN Client Adapter Driver




Supported Operating Systems

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

File Name

Versions (30-Dec-2005) (2005-12-30) via .inf

Uploader Notes

Notebook Ultra Value

Marvell Wireless Client Card Device Driver File

Uploaded By

Sathishkumar (DG Staff Member) on 10-Sep-2009

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
AzSetup.exe 270.3 KB 7 Jan 2006
Inf/Win98/Mrvw121.sys 370.6 KB 30 Dec 2005
Inf/Win98/netmw121.inf 13.4 KB 30 Dec 2005
Inf/WinMe/Mrvw122.sys 370.6 KB 30 Dec 2005
Inf/WinMe/netmw122.inf 13.4 KB 30 Dec 2005
Inf/WinX64/Mrvw126.sys 321.5 KB 30 Dec 2005
Inf/WinX64/netmw126.inf 24.9 KB 30 Dec 2005
Inf/WinXP_2K/Mrvw123.sys 282.6 KB 30 Dec 2005
Inf/WinXP_2K/Mrvw125.sys 282.6 KB 30 Dec 2005
Inf/WinXP_2K/ 8.5 KB 6 Jan 2006
Inf/WinXP_2K/netmw125.inf 23.2 KB 30 Dec 2005
Utils/Release/0x0409.ini 5.5 KB 4 May 2004
Utils/Release/ISScript10.Msi 897.5 KB 24 Apr 2004
Utils/Release/Marvell CB35P/AutoLinkLib.dll 49.2 KB 12 Nov 2005
Utils/Release/Marvell CB35P/EULA.rtf 98.2 KB 12 Nov 2005
Utils/Release/Marvell CB35P/Mrv8000x.dll 94.2 KB 12 Nov 2005
Utils/Release/Marvell CB35P/Mrv8000x.exe 618.5 KB 7 Dec 2005
Utils/Release/Marvell CB35P/odSupp_M.dll 1.3 MB 12 Nov 2005
Utils/Release/MrvCB35P.msi 859.9 KB 8 Dec 2005
Utils/Release/MrvSetup.exe 249.9 KB 8 Dec 2005
Utils/Release/Setup.ini 2.0 KB 8 Dec 2005
Utils/Release/instmsia.exe 1.7 MB 12 Mar 2002
Utils/Release/instmsiw.exe 1.8 MB 12 Mar 2002
Utils/Setup.exe 57.3 KB 12 Nov 2005
marvell.ini 998 bytes 5 Jan 2006
marvell.ini.bak 946 bytes 5 Jan 2006
wizard.xml 3.8 KB 17 Dec 2005

How to Update 331 Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the 331 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 331 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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