Mini Display Port works fine - although the connector has no locking mechanism... so can too easily be pulled out.

However - its the spec of the graphics card you have to be aware of and whether it works under Snow Leopard for catalyst use. (ATI 4870 / 5770 / 5870 don't May 2011)

see post:
http://chaldee1.gotadsl.co.uk/~richa...ead.php?t=1871
http://chaldee1.gotadsl.co.uk/~richa...ead.php?t=1908

MDP only supports Single Link DVI using the passive adaptors. There are powered adaptors available to support Dual Link DVI

As of May 2011 Best card to use with 4,1 and 5,1 MacPros running 10.6.7 is Nvidia Quadro 4000.

S