More like not supported by Amiga OS4. Xena (the onboard XMOS), Xorro (the proprietary hardware slot), on-board sound chip, on-board ethernet chip,...etc.
So that would be 'none' then.
And also: "Way to state the obvious genius."
Although some of the on-board components were supplemented with add-on cards, I can't find the specifications for these components.
Lazy, or just not that bright?

Which brings me to my next point:
You had a first one?
why would anyone be dumb enough to develop and waste money for on-board components that aren't supported only to have to use add-on cards in place of those components (further increasing the cost of the system)?
Well, %&$#?@!%&$#?@!%&$#?@!%&$#?@!. If I hadn't been making the same point over on AW.net for the past few days I might just disagree on principle. Ah well, point conceded.
Actually I wouldn't. I know how marketing works but in order to run a business you also need to cover your ass. If you're target audience is one that can waste $3,000 on exotic hardware, it makes sense that they probably have enough money to sue you.
And yet apparently you're naive enough to think you can take a marketing document with disclaimers all over it and nail someone to the wall with it in court even though you have inferred meaning way beyond that which is even implied, let alone stated, in the document.
Add to that the informative sales portal which clearly states the limitations of support in the current OS release for said hardware...
(^_~)b
Oooh, ascii art. I'm in awe of your l33tnessness.