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File Version : 4. 11. 22
Description : U.S. Robotics port driver
Copyright : Copyright (C) 2000 U.S. Robotics Corporation
Product Version : 4. 11. 22
Product Name : U.S. Robotics Modem Driver
Company Name : U.S. Robotics Corporation
Internal Name : 3c1807pd.sys
File Size: 113762 byte(s) 111.98 KB
MD5 : 497f2190e87d58fd68e559e083796edc
SHA1: 1466BF573868AF8BB3A3FE12D560356A3AD7BA37

Download USR79N51.SYS
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How to Install USR79N51.SYS
Repair Sys ProblemsFixing a corrupted or missing USR79N51.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.