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File Version :
Description : Logitech USB Filter Driver.
Copyright : Logitech, Inc. 1987-2008. All rights reserved.
Product Version :
Product Name : Logitech SetPoint(TM)
Company Name : Logitech, Inc.
Internal Name : LUsbFilt.Sys
File Size: 41488 byte(s) 40.528 KB
MD5 : a1eb1db073972c7ce252daa3456bbbe7

Download LCLD9USB.sys
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How to Install LCLD9USB.sys
Repair Sys ProblemsFixing a corrupted or missing LCLD9USB.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.