Connector 8 PIN

irpersian20

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Sep 4, 2012
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Hi
When the eight-pin connector and the four pin connector should be used?
It depends on what it is?
Asus P8b75-v
I7 3770
First i used 8 PIn connector but system don't start.
and i used 4 pin connector and system work.
It's right?

Thanks
 

Engima

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Jul 17, 2011
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Are you referring to the 8-pin CPU power connector? You need that plugged in to start the computer.

Does the connector from the PSU look like this? 8-pin CPU connector

The 4-pin connector could be the PCI power cable but can you tell us what the PSU is?
 

irpersian20

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Yes,8-pin CPU power connector.
http://www.green-case.com/products/power/power.php?model=gp480a_sp

I use (4+4)8 pin plugged in motherboard.but don't start system.
I force 4 pin plugged and system started.
Which is part of the problem?
 

irpersian20

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Sep 4, 2012
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Yes,8-pin CPU power connector.
http://www.green-case.com/products/power/power.php?model=gp480a_sp

I use (4+4)8-pin connector and plugged in motherboad but system can't start.
I force use 4-pin into 8pin motherboad and system worked.
Which is part of the problem?power or motherboad?
 

Engima

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If your computer runs on 4 out of the 8 pins then just leave it alone and have a working computer. I remember that I had this weird problem too but after waiting a few months the motherboard decided that I could then plug in the rest of the 8-pin connector.
 

irpersian20

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Sep 4, 2012
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When I use the four pin PC works without a problem.
But if I use the eight pin system will not start
 

InvalidError

Titan
Moderator
Are you 100% certain you are using the 8-pin EPS12V connector? It looks very similar to a 8-pin PCIe power connector but on the PCIe power connector, 12V and GND pins are on opposite side from EPS12V. If you used the wrong connector, the 12V lines are being shorted to ground on the motherboard.
 

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