Corsair AX860i PSU power connection diagrams?

Kagetora

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May 16, 2013
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Hey gang.

I'm trying to connect my AX860i PSU to an ASUS P9X79 LE motherboard, and I am running into a snag. The 24-pin and 8-pin cables that came with the PSU are literally 2-3 times too long and inflexible to boot. I'd love to build some custom, shoter, uv-reactive cables, but it seems as if Corsair is determined to keep me from doing so.

The mobo comes with diagrams of the connectors and what each pin is (3V, 12V, ground, etc.), but I can't find this info anywhere for the PSU. The manual is pathetic, the website is useless, and a web search turned up nothing. So, I came here to ask. To top things off, the PSU is some odd Corsair 10-pin+14-pin combination connector, with every pin full, leading to a standard 20+4 connector on the mobo side with one spot empty and one spot having 2 wires in it, so I am wary of doing this without all the info at my fingertips. Things don't match up easily. I could do it by destroying the cable completely, re-using the plugs as I replaced the wires one by one, but if I could avoid that it would be great.

Could also use the same diagram for the 8-pin...the mobo is just 12V on one side (4 pins) and ground on the other (4-pins), and it would be nice to confirm the PSU is the same.

Thanks!
 

Kagetora

Honorable
May 16, 2013
25
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10,530
Oh, btw...the pin missing from the mobo connector is a ground connection on the mobo diagram, and the doubled-up pin is also a ground. WTF would Corsair not just run grounds to both pins?
 

Kagetora

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May 16, 2013
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Ok, fair enough...the mobo says ATX 2.0 or later, and the diagram matches that specification. The PSU says it is ATX 2.3 and backward compatible to 2.2 and 2.01. Are all of the pin configurations identical?

And could I just go for a 1-1 correspondence between the plugs...i.e. just run wires straight across, and use all pins, instead of doubling up on a ground and leaving one empty?
 

Kagetora

Honorable
May 16, 2013
25
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10,530
Hmmm...I think I might have figured this out. I may have been looking at the plug diagram backwards...I thought the empty pin was #17, a ground, but I now think it is #20, a "no connection" or "reserved" pin that the mobo diagram lists as "-5V." Seems like I would want to leave that one empty.

Looks like this is going to get expensive. I'll apparently need to re-use the special Corsair 14+10 plug on the one end, and unsleeve the entire cable so I can copy it wire-for-wire with the new, shorter, uv-reactive wires and plug. So I'll be destroying the original AND paying to build a new one. Wheee.
 

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