Cisco AIR-PI21AG 802.11a/b/g PCI Card Driver Download
The AIR-PI21AG 802.11a/b/g PCI Card is a network device manufactured by Cisco Systems. 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 - "CiscoAirOnet21cd.zip" - has been downloaded 14,911 times and is rated 5 out of 5 stars based on 113 reviews. Our users report success installing this driver update on PCs running Windows XP. The total disk space used for this update is 7.1 MB.
Supported Models
AIR-CB21AG 802.11a/b/g PC-Cardbus Card
AIR-PI21AG 802.11a/b/g PCI Card
Manufacturers
Supported Operating Systems
Windows 2003, Windows XP, Windows 2000, Windows 98SE
File Name
Additional Notes
Cisco wireless drivers are hard to get. This is off of the installation cd that came with cisco a,b,g pcmcia wireless card. Read the readme, it may help you down the road : )
Uploaded By
J.A. Stuart (DG Member) on 9-Jul-2006
Most Helpful Reviews
(1 hour after download)
(18 minutes after download)
(3 months after download)
Already tried it? Give your review.
See all Cisco AIR-PI21AG 802.11a/b/g PCI Card ratings and reviews
Related Driver Updates
Driver Contents File List
The following files are found inside the driver download file.
| Name | Size | Date |
|---|---|---|
| FileList.txt | 678 bytes | 24 Jun 2005 |
| Regulatory.pdf | 1.0 MB | 24 Jun 2005 |
| WinClient-802.11a-b-g-Ins-Wizard-v21.exe | 6.4 MB | 24 Jun 2005 |
| really_readme.txt | 641 bytes | 9 Jul 2006 |
How to Update AIR-PI21AG 802.11a/b/g PCI Card Device Drivers Quickly & Easily
Step 1 - Download Your Driver
To get the AIR-PI21AG 802.11a/b/g PCI Card 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 Cisco AIR-PI21AG 802.11a/b/g PCI Card 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 Cisco 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 Cisco 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
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.
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.