Thanks for this. How difficult was it to install that to the Mac Pro?
Pretty simple install. Shut down, lay in on the side and remove the side (pop open the lever on the back and its out) open the side, undo the bar that holds all the cards in place, remove a cover for an empty slot, pop in the card. Put the bar back on, put the cover back on, and restart. No tools necessary.
Depending on the card you may have to install a driver. I bought the version that has 2 eSATA ports and 2 USB ports, I have to 9TB raids I bought from OWC connected via eSata. So one card takes care of everything.