The fan pin? The heatsink fan? Yes that was plugged in.
Here are all the specs on the processor:
sSpec SL7PK (This was hard to make out but I think is accurate)
Freq 2.80E Ghz
CPUID String 0F41H
478 Pin
Core Voltage 1.287v - 1.400v
Bus Speed 533
Man Tech 90nm
L2 Cache size 1 MB...
I have an ASUS P4S8X that is running a 2.53Ghz. The Asus site tells me the P4-2.80 GHz (533 FSB, L2 cache:512KB) will run on my motherboard. I made a purchase at NewEgg and got a P4/2.8GHz 533M 478PIN/1MB RET, but I think this has a 1M L2 Cache. I have tried twice to put this on my Asus board...