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 ...

Fan controllers have hardly been the stuff of copious Internet chatter, apart from the Digidoc 5 back in... hmm... 2001? Do you remember back that far? Back then the ...

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 point of this guide is to show the latest and greatest in fan control technology on Intel Z270 motherboards and to help you understand what each brand has to offer in their high-end products. I ...

The CPU OPT header is an additional connection for special processor cooling accessories, such as specialized coolers with multiple fans or water-cooling components. Functionally, CPU OPT is identical ...