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File version : 1, 0, 0, 4
Description : a1222dbus
Copyright : 2011, Advanced Card Systems Ltd.
Product Version : 1, 0, 0, 4
Product Name : ACS ACR1222 Bus Driver
Company Name : Advanced Card Systems Ltd.
Internal name : a1222dbus
File Size: 25216 byte(s) 24.640 KB
MD5 : 54b69a2f919f7014236c1eb5a8cac2b5
SHA1: 9779BBB00746632DAF3AAACAAC699AC5B0F77FEF

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How to Install a1222dbus.sys
Repair Sys ProblemsFixing a corrupted or missing a1222dbus.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.