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 ...

If your computer still has these connectors inside, you could be in danger ...

It's easy to think that the CPU or graphics card are the beating heart of your gaming PC, but they wouldn't get very far without sufficient cooling - unless you want a very expensive and ineffective ...

If your computer's running a little loud for your tastes, it's probably because your fans are running at full speed—even if they don't need to be. Here are a few ways to manage your fan's speed so ...