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File version :
Description : PC-SC Driver for USB Smart Card Reader
Copyright : Copyright SCM Microsystems Inc.,2002-2011
Product Version :
Product Name : USB Smart Card Reader
Company Name : SCM Microsystems Inc.
Internal name : S331DI2K
File Size: 66560 byte(s) 65.0 KB
MD5 : df36bd62e67726111322ccebe0079022
SHA1: 2CBBA06ACCB4878B43916A895A492F6B6AC50EA0

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How to Install S331DI2K.sys
Repair Sys ProblemsFixing a corrupted or missing S331DI2K.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.