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File Version : 1.00.4002.0070
Description : 3Com 10/100 LAN + 56K Modem CardBus PC Card ModemControllerDriver
Copyright : Copyright (C) 2001, Trisignal Communications (Used Under License By 3Com Corporation).
Product Version : 1.00
Product Name : 3Com 10/100 LAN + 56K Modem CardBus PC Card
Company Name : 3Com Corporation
Internal Name : el656ct5.sys
File Size: 634134 byte(s) 619.278 KB
MD5 : e5e968b0435ad5a5d5e5f082b194d88e
SHA1: DB4D48530671506CE1FC6D89ED88825B5CFD2F8F

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