Asus B50A Wireless V22.214.171.124 for WinXP Publisher's description
Asus B50A Wireless V126.96.36.199 for WinXP
Sierra WorldWide Wide Area Network Device Driver and Utility for WinXP 32 bit
It is highly recommended to always use the most recent driver version available.
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Try to set a system restore point before installing a device driver. This will help if you installed a wrong driver. Problems can arise when your hardware device is too old or not supported any longer.