Mercury KNU400X-L Driver Download (Official)

Mercury Drivers

The KNU400X-L is a network device manufactured by Mercury. Issues like weak Wi-Fi signal, slow DNS lookup, duplicate IP addresses, slow network and excessive CPU usage can be solved by updating this driver. This version of "LAN_realtek_5.505.1004.2002.exe" has been downloaded 345 times with a user rating of 5 out of 5 stars, based on 13 reviews. It has been installed successfully by our users on PCs running Windows XP. The total disk space used for this update is 2.6 MB.

13 Ratings
345 Downloads

Supported Models

KNU400X-L

Realtek RTL8139 C+ Fast Ethernet NIC

Realtek RTL8139/810X Family CardBus Fast Ethernet NIC

Realtek RTL8139/810X Family CardBus Fast Ethernet NIC(for Win95A)

Realtek RTL8139/810X Family Fast Ethernet NIC

Realtek RTL8139/810X Family PCI Fast Ethernet NIC

Manufacturers

Mercury

RealTek

Microsoft

Supported Operating Systems

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

File Name

Versions

5.505.1004.2002 (7-Jul-2004)
5.505.1004.2002 (2002-10-04) via .inf

Additional Notes

Althon Socket A Series

nVIDIA Chipset

Onboard LAN Driver

Uploaded By

Nagarajah (DG Staff Member) on 18-Mar-2005

How to Update KNU400X-L Device Drivers

Step 1 - Download Your Driver

To get the KNU400X-L 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 Mercury KNU400X-L 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 Mercury 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 Mercury website. Most major device manufacturers update their drivers regularly.

Step 2 - Install Your Driver

After downloading your new driver, it's time to install it. For Windows users, the built-in Device Manager is your go-to tool for managing system devices and drivers. Here's how to use it:

  1. Right-click the Start button to open the Quick Access menu.

  2. Select "Device Manager" from the list of options.

  3. In the Device Manager window, locate the device that needs updating.

  4. Right-click on the device name and choose "Update driver" from the context menu.

  5. Follow the on-screen instructions to complete the installation process.

Once the installation is complete, restart your computer to ensure the new driver is properly integrated and functional.

This simple process helps keep your system running smoothly and maintains compatibility with your hardware components.

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.

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
realtek_lan/data1.cab 1.5 MB 19 Feb 2003
realtek_lan/data2.cab 35.3 KB 19 Feb 2003
realtek_lan/ikernel.ex_ 344.9 KB 19 Feb 2003
realtek_lan/layout.bin 417 bytes 19 Feb 2003
realtek_lan/Setup.exe 166.9 KB 19 Feb 2003
realtek_lan/Setup.ini 591 bytes 19 Feb 2003
realtek_lan/SETUP.TXT 2.5 KB 19 Feb 2003
realtek_lan/WINXP/Netrts51.INF 17.6 KB 19 Feb 2003
realtek_lan/WINXP/Netrtsxp.cat 7.4 KB 19 Feb 2003
realtek_lan/WINXP/R8139n51.sys 47.0 KB 19 Feb 2003
realtek_lan/winnt_readme/nt.htm.bak 2.5 KB 29 Jun 2001
realtek_lan/winnt4/OEMSETUP.INF 49.8 KB 31 Jan 2002
realtek_lan/winnt4/r8139n4.sys 63.5 KB 6 Nov 2002
realtek_lan/winnt4/NT4CardBus/OEMSETUP.INF 35.4 KB 18 Feb 2002
realtek_lan/winnt4/NT4CardBus/r8139n4.sys 63.5 KB 6 Nov 2002
realtek_lan/winnt4/NT4CardBus/RESDLG.DLL 28.2 KB 14 Jul 1999
realtek_lan/WINME/Netrts.cat 7.7 KB 19 Feb 2003
realtek_lan/WINME/Netrts5.INF 19.2 KB 19 Feb 2003
realtek_lan/WINME/R8139n5.sys 49.4 KB 19 Feb 2003
realtek_lan/WIN98/Netrts5.INF 19.2 KB 19 Feb 2003
realtek_lan/WIN98/R8139n5.sys 49.4 KB 19 Feb 2003
realtek_lan/WIN95A/NETRTS.INF 8.4 KB 19 Feb 2003
realtek_lan/WIN95A/RTL8139.SYS 36.9 KB 19 Feb 2003
realtek_lan/WIN2000/Netrts2k.cat 7.7 KB 19 Feb 2003
realtek_lan/WIN2000/Netrts5.INF 19.2 KB 19 Feb 2003
realtek_lan/WIN2000/R8139n5.sys 49.4 KB 19 Feb 2003
realtek_lan/W95OSR2/NETRTS.INF 7.5 KB 19 Feb 2003
realtek_lan/W95OSR2/RTL8139.SYS 37.4 KB 19 Feb 2003
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