PSU ATX 12v to motherboard -Won't fit!

fozzybear

fozzybear

fozzybear

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Ok, I've never had this problem before. I've got a Corsair CX 430w and a Gigabyte GA 880GMA-UD2H motherboard.

I've just found out that the PSU's 12v 8 Pin cable will not fit into the motherboards ATX 12v socket.

On the 8 pins of the motherboard, it goes CSSC and SCCS (I've described them as square and curve). On the PSU it is CSCC and SCCC. They just don't match to connect.

Hope I've explained that OK. They just don't fit. I'm stuck.
 
Maybe you're looking at the pcie cable on the psu and it only has a 4 pin atx 12v cable?

all i could think of really.
 
pretty sure the CX430 wont come with a 8Pin Pcie lead, and the pcie lead will have Pcie written on the plug ;)

have you tried separating the two 4 pin plugs? they should seperate for boards that only use a 4 pin header as opposed to an 8 ;)
 
i've had an 8 pin connector that wouldn't fit properly before and i cured that by using an 8 pin extension and that fitted fine but i think that was just ill fitting and not actually different shaped connectors.

if you split the connector into the 2 4pins does it work with one that you can fit in ? as long as your not using a 125w plus cpu it should be fine with the 4 pin if the right half of the connector fits.

the cx 430 has the atx 8 pin that splits into 2 x 4 pins and the pcie 8 pin splits to 6 + 2 pins so it's hard to get them confused.
 
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Seraph said:
pretty sure the CX430 wont come with a 8Pin Pcie lead, and the pcie lead will have Pcie written on the plug ;)
Click to expand...

you'd be wrong. read the review .

The 24-pin, CPU power and PCIe are very long at 600mm each. The SATA and peripheral power connectors are a tad shorter than normal at 400mm. There aren't a lot of power connectors and only one PCIe, but this is only a 430W power supply. One thing that struck me funny about the PCIe is that it's a 6+2 connector. Someone correct me if I'm wrong, but where do you use only an 8-pin PCIe connector? If you only have one PCIe powered card, it tends to be a 6-pin.
Click to expand...

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=214

No it's not. The PCI-E is labelled as that. I'm using the other one.
12th Mar 2011 13:10
Click to expand...

so whats the pin-out of that cable then?
 
PCI-E split is CCSS and SCCC.

Will have to look into the board further to see if it's ok with 4 pins.Half of the 8 pins of the PSU fit to part of the motherboard pins.
 
which cpu are you using in the board ?

it will definitely work with only the 4 pin if it is the right half that fits but the 8 pin is designed to give more stability with high wattage cpu's.

the correct half of the 4 pin (for a 4 pin only psu) should look left to right curved and square at the top and square then curved at the bottom looking at it with the clip at the top.
 
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it will be fine, i wouldn't recommend running an x6 on it though or the 125w phenom x4's but the 95w cpu's will be fine.

you have to remember that many psu's like the ocz stealthxtream 2 500w and antec baisq power's still only come with a 4 pin atx connector only so if the boards didn't work with them nobody would buy those type of psu's.

this is what the 8 pin should look like -



it looks like your psu has the wrong connector on it.
 
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The "curved" ones will fit into the "square" holes.

CSCC and SCCC should fit into-
CSSC and SCCS

Perhaps it's just a bit of an awkward fit.

Give it a bit of a wiggle.
 
Thanks for your help guys.

I ended up just shoving the 4 pin in the 8 pin motherboard and, so far, everything seems fine.

I still find it puzzling why they were different connections though!
 
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