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File version : V4.38
Description : Motorola USB Modem
Copyright : Copyright (c) 1997-2006 MCCI
Product Version : V4.38
Product Name : Motorola USB Modem
Company Name : MCCI
Internal name : mqdmmdm.sys
File Size: 92064 byte(s) 89.928 KB
MD5 : ffbd4ff319b989f1ae47a1006acbd592

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