Thank you for a quick reply and Thank you Mr Robert Cook for your answer and yes it is where I would think the 4pin EPS connector should be. I'm confused as well the only mention of brown wires in a computer is as a sensor wire for the 3.3 voltage. This strange wiring is on an HP 410-010 Slimline desktop, motherboard AS# 822788-001 ATX CPU,with a power supply model DPS-180AB-20A. I have looked for a schmatic for the motherboard and the power supply with no luck trying and figure this out. I'm replacing my power supply with a RX-300FL flex ATX power supply so I can upgrade the graphics card to the Getforce gtx 1050ti.
Again Thank You
PS if you could find a schmatic for both power supply and motherboard I would really appreciate it.