searching "macintosh IIfx terminator" fourth link down brings up an old apple doc

http://support.apple.com/kb/TA42169

searching "apple part number 590-0705" second link brings up these people

http://www.seadec.com/iqnewequip_1.html

which seems to be some old new stock surplus place, anyway searching that page states they have 50 of the (not black but compatible) -A models in stock, email for info

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