Looking for info - En-link Ethernet card for the Apple II

Found a card in the local thrift store's '99-cent grab-box-o-cards', labelled 'En-link Apple II Interface'. On the back is a rubber-stamped 'Protoype' label. A Google search turned up nothing - the only thing I could find was an obscure reference to the board in my Softalk article database: July 84, P 68 'Marketalk News' "An Ethernet-compatible interface that can make the Apple an intelligent terminal in a local-area network has been manufactured by En-Link (4706 Bond Street, Shawnee, KS 66203; 913-268-6606). Utilizing current standard LSI integrated circuits designed for Ethernet, the board performs the necessary framing, retries, and error checking required of the system. Other applications for the board include communication with remote printers and terminals, $1,250. $750 each in quantities of 100 or more." Anyone have more information about this thing? Specifically, I'd like to get my hands on a manual and software (does software even exist?) Mike http://tarnover.dyndns.org/ Tarnover - The Apple II Repository