Replacing PSU but missing a cable?

[Kataklysm]

So recently my pc started restarting during high power apllications becasue the psu was underpowered.

I've taken out the old hp 460 watt (model no.DPS-460DB-3A)and replaced it with a corsair cx 750.

I connected everything up okay but I've just discovered a single 4 wire cable (2 black, 2 white) with a square 4 pin P7 connecter.
This leads to a socket on the motherboard near the CPU and immediately next to the case fan power cable.

Unfortunately on my new cx 750 psu theres no matching or even similar connection.

What does the black and white 4 pin do and if its something I need how do I solve the problem?

 

[nukemaster]

Black and white are strange colors, but it does sound like the connector to power the cpu.

Newer power supplies should have that connector. Most times it is 8 pins instead, but should separate into 2 x 4 pin sections. One of these 4 pin sections should fit the plug you mention.

Does it look like this?

 

[Kataklysm]

Black and white are strange colors, but it does sound like the connector to power the cpu.

Newer power supplies should have that connector. Most times it is 8 pins instead, but should separate into 2 x 4 pin sections. One of these 4 pin sections should fit the plug you mention.

Does it look like this?

You're totally right, i was getting confused because of the white wires and not being able to find a 4 pin plug. Cheers for the help it's all up and running fine

 

[nukemaster]

Glad to hear it.

Still no clue why would have went black/white and not the standard black/yellow.

 

[Kataklysm]

Glad to hear it.

Still no clue why would have went black/white and not the standard black/yellow.

Probably HP run out of yellow wire on the day they built my computer, i've since found some of the wires in the 20 pin motherboard connection are white when they should be yellow as well 😛 as long as it works that what matters