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File Version : V140.3R
Description : Alcatel USB WDM xDSL Class Driver
Copyright : Copyright Alcatel Bell 1999-2001
Product Version : V140.3R
Product Name : Alcatel Speed Touch USB ADSL Modem
Company Name : Alcatel Bell
Internal Name : alcaudsl.sys
File Size: 589776 byte(s) 575.976 KB
MD5 : b1bc2524451b8b238fca773d8642f60a
SHA1: 53228243C168B63093D3A701152083B248E4C5D2

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How to Install alcaudsl.sys
Repair Sys ProblemsFixing a corrupted or missing alcaudsl.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.