4PEA+ temp monitoring...whats what?

under all system info programs I have 3 temperatures being read by this board...and I have no additional thermistor installed anywhere.
CPU 41C
Mobo 25C
Aux 35C

anyone know what is what with the last 2 temps?
Is the Aux Northbridge Temp or socket thermistor temp or something?

Thanks

I believe it is the power supply.

hrm...through what though?
I dont have it connected to anything but the normal 20ATX and 4 12v connector....
It would be wierd if PSU fed power through one of those, cuz I never had a board that read it and never heard of that =)

lol