Identify this connector...

[walk2]

What the heck is this? Strange power connector coming out of that Antec 350W power supply.

Is it for the motherboard or some kind of weird floppy/hard drive?

 

[fell8]

Looks like an old-school AT connector for legacy support.

 

[SWScorch]

I believe some P4 motherboards (older ones) require that connector.

 

[pspada]

Yup, I've seen many Pentium systems with this connector (as well as the smaller square 4 pin one). I believe it has something to do with the throttle down mode when the processor overheats.

 

[Zepper]

Yeah, it's a P4 Aux power connector. Not used on newer systems.
.bh.