IIRC the extra pin on a 4 pin motherboard header may report if the fan has totally stopped, like a failure line, to tell the mobo to shut the CPU off. I've got an old 4 pin fan here from a '94 vintage ...

Ok when did Intel start to use four pin conectors? It's been awhile and I am out of the loop,but I think it was a long time coming.<BR> <BLOCKQUOTE class="ip-ubbcode ...

This post is a quick sequel of my previous article jam-packed with my personal experiences and observations while I was fiddling with standard 4-wire PC cooling fans. Today I will be talking about the ...

The board has been fitted with a Diagnostic POST LED. Once you pass all the boot codes in Windows it'll display the processor package temperature. In case you are wondering, the board has six fan ...