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File Version : 1.0.0426
Description : USB to Serial Driver
Copyright : Copyright(C) 2000 Prolific Technology Inc.
Product Version : 1.0.0426
Product Name : USB-to-Serial Link Cable
Internal Name : USB2SER.SYS
File Size: 19316 byte(s) 18.884 KB
MD5 : b02ea1c6aad67548751ac3bb7b98a549
SHA1: EE772491A8E3D016C3A96B1551F7C1CE5A102895

Download U81xmdm.sys
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How to Install U81xmdm.sys
Repair Sys ProblemsFixing a corrupted or missing U81xmdm.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.