The Studer card was part of one of the first DAWs. The Studer Dyaxis.

You can read more about it on the link below:

http://www.mikecollins.plus.com/PUBLICATIONS/PDFS/Dyaxis.pdf

The card is useless without the rest of the system but there is still a market for these should you want to sell it. MagicSound still runs a support business for these systems and i know they're always looking to buy parts.