Alright, so I've got Dell Dimension 4100 that'll be 2 years old this October. I'm considering doing a major upgrade: new motherboard, stick of 512 DDR, and a Pentium 4 at 2.4 GHz. I was measuring my old one the other day, and I didn't see any LEDs. I thought that maybe they could have been under the tunnel that directs the processor's heat out the back, but I couldn't be for certain. I didn't see any wires going to it or anything. But, I did notice this thing that was connected to the motherboard right by the ATX socket. It looked like it could have been a molex connector, but it had mainly blue wires (I think). I was thinking maybe Dell makes their LEDs into a little plug-in like that instead of doing it the old fashioned way? Anyone know if this is true, or if they're just under the air tunnel? Lemme know, the help is much appreciated.