3Com 3C509b Driver Download
The 3C509b is a network device manufactured by 3Com. 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 driver - "3c90x1.exe" - has been downloaded 11,569 times and is rated 3 out of 5 stars based on 46 reviews. Our users report success installing this driver update on PCs running Windows XP. The total disk space used for this update is 908.3 KB.
Supported Models
3C509b
Manufacturers
Supported Operating Systems
Windows XP
File Name
3c90x1.exe (908.3 KB)
Additional Notes
all Windows operating systems up to and including XP.
Uploaded By
Darrell Patterson (DG Member) on 4-Nov-2001
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Related Driver Updates
How to Update 3C509b Device Drivers
Step 1 - Download Your Driver
To get the 3C509b 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 3Com 3C509b 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 3Com 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 3Com website. Most major device manufacturers update their drivers regularly.
Step 2 - Install Your Driver
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.