link: http://www.ebay.com/itm/272118422825 I received this board with another Ohio Scientific board. There are zero components populated, not even the Molex connectors. Sockets are present for the 2114 static RAMs and some of the board logic. Super clean board otherwise. I'm not sure what else it's used for, but the 525 board was used in Ohio Scientific's 14" hard drive subsystem -- I know as I've got one. It can of course be used as standard system RAM, and it's probably cheaper to find a bunch of 2114 static RAMs than a bunch of working SEMI4200s for a OSI 520 board. This one's up as an auction as I have no real idea what it's worth. I don't need it for any of my OSI stuff, but I figured someone else can use it, and with the scarcity of OSI boards, I shouldn't hold on to it. Thanks, Jonathan