I need to re-create this scenario, but with thunderbolt crap I guess. Here's some crude ASCII art illustrating a possible (the most likely?) scenario.
macbook pro
(is also display 4)
|
|
(thunderbolt)
|
|
V
2-port Thunderbolt
to PCIe adapter ---> (daisy-chain, thunderbolt-to-dvi) --> display 3
with 2-head card
| |
| |
(dvi) (dvi)
| |
| |
V V
display 1 display 2

