HP Z800 With HD4 (TDM)

[Rattleshock]

Greetings!

I have a question that I cannot seem to find a clear answer for. I currently am running HD3 on an Avid Qualified HP Z800 workstation. It says in one of the avid qualified system documents that QTY4 accel cards can be installed internally on the HP Z800, however, in the accompanying "Slot Order Configuration Guide" for the HP Z800 it only shows where to install QTY3 accel cards. With the price of current cards so low I was thinking of scooping one up and adding it to my system but I don't want to purchase it only to find out it doesn't work as I currently do not have an expansion chassis. It seems the 2 documents from Avid sort of contradict themselves, or at least it doesn't clearly show how to configure 4 cards internally, even though the literature says it is supported.

Does anyone have an answer or experience with running 4 HD cards in a Z800 with Pro tools 10HD? Any help or insight would be greatly appreciated.

Much thanks!
Glenn