Asus A8N-SLI fan speed monitoring and temp in speedfan.

Does anyone know if this board supports monitoring of the psu fan, or the chassis 2 fan headers? I know the headers are there and they work fine but the asus pc probe software as well as speedfan don't detect the fan speed for these headers, they dont' even show up as being there in the bios where the others speeds are located. The fans that are being displayed are the chipset fan, the chassis fan in the front of the case and of course the cpu fan.

I guess I am confused why they monitor some of these fan headers on the motherboard but not others. I would think its important to have that capability in order to contol all fans not just these three.

I was also trying to figure out what the different temps are in speedfan, or what temps are under temp 1, 2, 3, 4, etc. There are two temp 1's which I guess is the processor, 2 is the motherboard but what is 3? Also there is the hard drive temp.

I am trying to figure out if the northbridge temp is even being monitored, if not what in the world is that temp? temp 3 that is.

Thanks