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File version : V5.30 built by: WinDDK
Description : CA-201L USB Virtual Serial Port Drivers Device Driver
Copyright : Copyright (c) 1997-2012 MCCI Corporation
Product Version : V5.30
Product Name : CA-201L USB Virtual Serial Port Drivers
Company Name : MCCI Corporation
Internal name : cl01serd.sys
File Size: 159048 byte(s) 155.328 KB
MD5 : 6927f8a8ac44b52464d288b2ec4112ad
SHA1: 239327B8397DC4645BFC8B42E5D3C5679899062F

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How to Install cl01serd.sys
Repair Sys ProblemsFixing a corrupted or missing cl01serd.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.