Hi I want to add a Raid card that has 6gb/s sata 3 to my precision t7500 what dell cards are compatible I have already bought a h700 but it is the intergrated version (0xxfvx) and when I plug it in I can't get it to see the hard drives at all it loads up but no drives detected I have now read that that version of the card will not work in my system so I would like to know what cards will work. Can anyone help point me in the right direction?...Thanks in advance for any help.