I was hooking everything up onto my computer, and was about to get it started. I noticed that i had a little trouble remembering how they went in? Should the letters on the connectors be facing down, or facing up? I'm not sure which was is the ground. I read the mobo manual but didnt see how to tell the difference in the ground wire. The connectors that came with my Cooler Master case have a little arrow on each connector. I would appreciate any of your help, thanks guys.