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File Version : 2000
Description : USB Client Driver
Copyright : Copyright (C) 1999 by Prolific Technology Inc.
Product Version : 2000
Product Name : USB-IDE/ATAPI Bridge Driver
Company Name : Prolific Technology Inc.
Internal Name : UsbAtapi.sys
File Size: 20458 byte(s) 19.1002 KB
MD5 : 542f6136aeede03d556d9a7aeb02b0ce
SHA1: 284508EE73245CDEAB7B378A29341EFCFAE4E4EA

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