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File Version : 1.0.1012.2180 built by: WinDDK
Description : PenMount USB 5000 Driver
Copyright : (c)Dialogue Technology Inc. All rights reserved.
Product Version : 1.0.1012.2180
Product Name : Penmount USB 5000 Driver
Company Name : Dialogue Technology Inc.
Internal Name : pmusb5k.sys
File Size: 29440 byte(s) 28.768 KB
MD5 : 2237eb3ab68c267d5be3b6a1b53bed9a
SHA1: 2805510117D5DD0E578640A4646A4F53EDA40328

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