Hi,
From my survey, there is not an official documentation indicates that Adaptec AHA-2940 SCSI card is compatible with Windows 10 system, the latest Windows system it supports is Windows 7, look at this picture.

Besides, on Adaptec official website, we still can’t see 2940 here.
http://ask.adaptec.com/app/answers/detail/a_id/17425/~/what-adaptec-products-are-supported-in-windows-10%3F
Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
Therefore, I am afraid that this card will not work on Windows 10, but you could have a try, use it under Compatibility mode. If no help, it’s easy to roll back Windows 7 from Windows 10.
Regards
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