This the original disk that comes with the cyberparallel by siig. It has drivers for DOS/Win 3.x, 95, 98, NT. I looked for this driver on this site and couldn't find it. The siig site only contains updates. You need this disk to initiate the card so you can install the updates. It's original so I know it works. Besides I tested it. It is good for the single and dual port card. Hope this helps a lot.