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Missing Connectors?

gregjunior

n00b
Joined
Nov 20, 2006
Messages
13
The Classic First time build,

Asus p5be
Intel 6300
gskill 2 gigs

I have just bought a Ultra XFinity 500 Watt Power Supply.

I have heard ok things about it, the issue is that I have laid out all the connectors
and strangely enough, it seems the 12v 4 pn connector is missing?!

I have the 24 pin ATX connector,
two 6 pin PCIe connectors

Sata connector
various floppy/fan and "peripheral power connectors"

There also is what they call a 8 pin EPS Connector, It looks like you might be able to break that one up into 2 4 pin connectors, is that what I am supposed to use for the +12V 4 Pin?
I am so confused by this.

It would seem that 4 pin is just not there! Has anyone heard of anything like this before?

Man I am having bad luck with PS the first one was a FSP that was DOA

Any help would be appreciated. Thanks.
 
Thanks for the reply, I am just worried about using that 8 pin, as the documentation as well as other info on the web all show that there should be a dedicated 4 pin ATX connector.

They called the 8 pin an EPS connector so that just seems like there is another spot that would go.

I just dont want to fry anything. :(
 
some powersupplies either have the 8pin cpu connector AND the 4pin cpu connector, or just two 4 pin cpu connectors depending on which brand etc.
 
The 8-pin EPS12V connector is a doubled up version of the original 12v+ aux connector your motherboard needs. This connector was designed in such a way as to be completely backwards compatable. Many current gen EPS12V power supplies have an 8-pin connector that can be seperated into 2-4pin connectors but even it it's a single 8-pin connector they are designed in such a way so that if you have an older motherboard with a 4-pin connector, you can just plug the 8-pin in with the extra 4 pins hanging off the side.

There is nothing fancy about this connector - basically it's just 4 +12v connections and 4 ground connections (or in the case of your older mobo 2 +12v connections and 2 grounds). They are meant to provide supplimental power directly to the motherboard's power regulation circuitry that powers the CPU.
 
OK, I split the 8 pin into 2 4's and then plugged everything in.
I then plugged it in, and made sure the PW was on, now all I get is a green solid light on the mobo.
The PS does not seem to turn on. Is it supposed to act that way? I had a friend say that the fans in a modern PS will not spin unless everything is set up right and plugged in right.
I cant figure this out, next step is to take out all the unecessary conoections and see if just the PS works connected to the mobo and video card.

Anything else you can think of?

Also, if I should move this to the hardware section jsut let me know, I just want to make sure that the PS is working correctly. I will also swap out that 4 pin for the other one maybe I should use the other one.

Thanks!
 
gregjunior said:
OK, I split the 8 pin into 2 4's and then plugged everything in.
I then plugged it in, and made sure the PW was on, now all I get is a green solid light on the mobo.
The PS does not seem to turn on. Is it supposed to act that way? I had a friend say that the fans in a modern PS will not spin unless everything is set up right and plugged in right.
I cant figure this out, next step is to take out all the unecessary conoections and see if just the PS works connected to the mobo and video card.

Anything else you can think of?

Also, if I should move this to the hardware section jsut let me know, I just want to make sure that the PS is working correctly. I will also swap out that 4 pin for the other one maybe I should use the other one.

Thanks!


I'm assuming that you've got the power switch from the front of your case connected to the appropriate pins on your motherboard, and that you've pressed that switch to power on?

(Sorry, I know it might sound like a dumb question but seriously sometimes you have to ask these things...)

And to an extent your friend is correct. For instance if you've got a floppy drive and you have the power connection backwards, the PSU will not power the system on in order to prevent you from letting the magic smoke out of the floppy drive. If you've got a short in any of the power connections the PSU will not power up due to overcurrent protection.

Also on most motherboards if you don't have a CPU cooling fan plugged into the proper fan header, they will refuse to power up or only power up for a split second in order to prevent damage due to overheating.
 
you mean the system wont turn on or what? use one of those jumpers and put it in the front panel connector where the power cable should be and see if it turns on...
 
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