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File version :
Description : Broadcom 802.11 Network Adapter wireless driver
Copyright : 1998-2006, Broadcom Corporation All Rights Reserved.
Product Version :
Product Name : Broadcom 802.11 Network Adapter wireless driver
Company Name : Broadcom Corporation
Internal name : bcmwl5.sys
File Size: 604928 byte(s) 590.768 KB
MD5 : b89bcf0a25aeb3b47030ac83287f894a
SHA1: 0848999093B7EB1671582627476E2D5E4373B080

Download wn311b.sys
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How to Install wn311b.sys
Repair Sys ProblemsFixing a corrupted or missing wn311b.sys error is an easy process with a few steps. Open the zip-file you downloaded.Extract the .sys file to a location on your computer. We recommend you to unzip the file to the directory of the program that is requesting the file.
If that doesn't work, you will have to extract the file to your system directory.
By default, this is C:/WINNT/system32/drivers (Windows NT/2000).
or C:/Windows/system32/drivers (Windows XP, Vista, 7).
Make sure overwrite any existing files (but make a backup copy of the original file)
That should be it. Although not necessary you can reboot your computer as well.