Topic: How do I connect three Fireface 800 on PC (Win 7 64)

Hello everybody!
I'm currently usin 2 ff800 daisy-chained, workin perfect. Now I added a third ff800, everything syncs ok but in Cubase 6.5 BSOD appears when I activates a output preset wich includes every ADAT-out and 16 analog.
I updated drivers till latest available.
If I don't activates the preset then Cubase is warning me for different samplerates and suggest me to either change project setting or accept diffrent framerates and then the system seeems sluggish.

I've tried to connect 1 ff800 separately to an own firewire800 connector on the card, but only resulting in that it won't be found.
Is itpossible to daisychain 3 ff800?