Apparently Apple has moved some OS 8.5 TILs today for whatever reason. Those links will be corrected as soon as they 'settle down'. I can understand Apple doing that and personally would think the Ragepro is a fair tradeoff. The bandwidth of the Mezzanine slot was not sufficient for things like a video card anyway according to my sources. The OS 8.5 Feedback page is posted and contains many stories of compatibility issues and some workarounds.
Input is aways welcome.
Also note the mixed reports on the PowerCenter Pro. I've also listed links to new Apple TILs on OS 8.5 issues on the page. They have not received a reply from Orange Micro which would be the final word but based on past PC CPU cards in Macs I don't think they can use any other installed PCI Cards. I've got a WorkgroupServer 9150 with the 240MHz Crescendo card with b8 of the extension. I have been getting random freezes that lock up the computer solid.