Broadcom 4321AG 802.11a b g n Wi Fi Adapter Driver Update
The 4321AG 802.11a b g n Wi Fi Adapter is a network device manufactured by Broadcom. 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 device is supported under legacy operating systems such as Windows Vista and Windows XP. Matching drivers have an average rating of 4.6 out of 5 stars and have been downloaded over 835,733 times. Find the best version below that matches your operating system. DriverGuide utilizes the latest anti-virus software to guarantee downloads that are safe from viruses and malware.
Find All Broadcom 4321AG 802.11a b g n Wi Fi Adapter Drivers
Popular Driver Updates for Broadcom 4321AG 802.11a b g n Wi Fi Adapter
If you have had recent power outages, viruses or other computer problems, it is likely that the drivers have become damaged. Browse the list above to find the driver that matches your hardware and operating system. To see more matches, use our custom driver search engine to find the exact driver.
Tech Tip: If you are having trouble deciding which is the right driver, try the Driver Update Utility for Broadcom 4321AG 802.11a b g n Wi Fi Adapter. It is a software utility that will find the right driver for you - automatically.
DriverGuide maintains an extensive archive of Windows drivers available for free download. We employ a team from around the world which adds hundreds of new drivers to our site every day.
How to Install Drivers
Once you download your new driver, then you need to install it. To install a driver in Windows, you will need to use a built-in utility called Device Manager. It allows you to see all of the devices recognized by your system, and the drivers associated with them.
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
Install Drivers With Device Manager
Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.
Select the Driver tab.
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.
Visit our Driver Support Page for helpful step-by-step videos
Install Drivers Automatically
Many device drivers are not updated through the Microsoft Windows Update service. If you are having trouble finding the right driver, stop searching and fix driver problems faster with the Automatic Driver Update Utility. Automatic updates could save you hours of time.
The Driver Update Utility automatically finds, downloads and installs the right driver for your hardware and operating system. It will Update all of your drivers in just a few clicks, and even backup your drivers before making any changes.
Once you download and run the utility, it will scan for out-of-date or missing drivers:
When the scan is complete, the driver update utility will display a results page showing which drivers are missing or out-of-date:
Next, update individual drivers or all of the necessary drivers with one click.
Benefits of Updated Drivers
Many computer problems are caused by missing or outdated device drivers, especially in Windows 11. If your desktop or laptop is running slow, or keeps crashing or hanging, there is a good chance that updating your drivers will fix the problem.
Ensures your hardware runs at peak performance.
Fixes bugs so your system will have fewer crashes.
Unlocks new features and configuration options in your devices, especially with video cards and gaming devices.