The KT4A Ultra is a network device manufactured by MSI. 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 update - "BCM4401_64bit.zip" - has an average rating of 5 out of 5 stars based on 9 reviews, and has been downloaded 39 times. Our users report success installing this driver update on PCs running Windows XP. The total disk space used for this update is 38.4 KB.
KT4A Ultra
ASUSTeK/Broadcom 440x 10/100 Integrated Controller
Broadcom 440x 10/100 Integrated Controller
MSI/Broadcom 440x 10/100 Integrated Controller
Windows XP (64 bit)
BCM4401_64bit.zip (38.4 KB)
4.37.0.0 (23-Nov-2005)
4.37.0.0 (2005-08-05) via .inf
KT4A Ultra
Socket A (AMD K7)
Broadcom 4401 LAN Drivers
For motherboard with on-board Broadcom 4401 LAN chipset
Jegadesh (DG Staff Member) on 10-Nov-2006
To get the KT4A Ultra 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 MSI KT4A Ultra 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 MSI 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 MSI website. Most major device manufacturers update their drivers regularly.
To install your new driver on Windows:
Right-click the Start button.
Click "Device Manager"
Find your device in the list.
Right-click the device and select "Update driver"
Follow the steps on screen.
Restart your computer when done.
This keeps your computer working at its best.
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.
The following files are found inside the driver download file.
| Name | Size | Date |
|---|---|---|
| BCM4401_64bit/b44amd64.cat | 14.7 KB | 11 Aug 2005 |
| BCM4401_64bit/b44amd64.inf | 27.2 KB | 6 Aug 2005 |
| BCM4401_64bit/b44amd64.sys | 83.5 KB | 6 Aug 2005 |