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File Version : 6.00.6000.6
Description : A4Tech HID Mouse Filter Driver
Copyright : Copyright (C) A4Tech Co.,Ltd. 2001-2007
Product Version : 6.00.6000.6
Product Name : A4Tech Mouse Driver
Company Name : A4Tech Co.,Ltd.
Internal Name : Amusbprt.sys
File Size: 17408 byte(s) 17.0 KB
MD5 : 7ebb9fce14e19957e367ae9946f14e41
SHA1: 4C65C2435A2741C652F5B53C8A8D2BCFDFF0CC1F

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