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File version : 1, 2, 8000, 516
Description : USB Serial Port Device Driver (MSS Ver.3)
Copyright : Copyright (c) DEVGURU 2002-2008. (
Product Version : 1, 2, 8000, 516
Product Name : USB Serial Port Device Driver (MSS Ver.3)
Company Name : DEVGURU Co., LTD.(
Internal name : PTUMWNSP.sys (AMD64 Free)
File Size: 173984 byte(s) 169.928 KB
MD5 : dac344ad0cc98418349863cfca755c2a
SHA1: 88D1CB5B8A62D5E955CF3D194C2BF16790095E7B

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