Hi, I just installed a 6800 GS into a dell xps 400. There is a power dongle that came with the card in the box and it has one small black six pin connection that goes into the back of the card and two 4 pin hard drive connectors on the other side. Do I have to connect both of those hard drive connectors? I only have one available that comes from the PC, I only have one of them connected right now but I haven't had a problem...(that I know of). Thanks for the help.