no i know where the heatsink attaches, what im trying to say is that its on the bottom side of the motherboard....i think its just some sort of support plate from what it shows in the manual, but id never seen anything like that....thats what im sayin it is then, a lovely heatsink/cpu support bracket of some sort
and thats similar to my motherboard, mine is not the platinum edition though, it doesnt have firewire and a few other features, but its pretty much the same as the platinum