23 pin ATX connector

I

Ironsoap

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Apr 12, 2007
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what would happen if I plug this into a motherboard and give it a test run? I'm going to buy another PSU, but in the meantime, I don't know if I should RMA this, or use it in my current PC (which doesn't need another PSU at all, but I'd hate to see this go to waste)

IMGA0045.jpg
 
Well.. first off, that's a 24-pin ATX connector.

Second, it's missing the -5V wire, which is why there's only 23 wires. But that's common since the -5V requirement was dropped from the ATX12V specification. Only older boards with on board sound with an amplifier (a very small one) ever used the -5V.

So other than the fact that the PSU is an Apevia, it should work fine.
 
Drop that thing quick before it melts on you and takes something with it. Money spent on a good PSU is money well spent, period.
 
Ironsoap said:
I know that, but it's become a 23 pin.

Also, it's not an Apevia, the case is.

It's a rosewill PSU (not much of an improvement, I know.)
Click to expand...

No, it is still a 24 pin with 23 wires as Jon said. Don't be pedantic.
 
madmat said:
No, it is still a 24 pin with 23 wires as Jon said. Don't be pedantic.
Click to expand...

Okay, let me be very very specific.

The power supply has 24 pins. but it only has 23 wires. The wire that's missing is nowhere to be found, and it was a ground wire.

If I plug this into a motherboard, can I expect smoke, or do I need to return the PSU.
 
It is not a ground wire, it is for the -5V like Jonny told you. In the early part of this century the ATX standard was changed to drop the -5V rail since ISA was dead and the only items in a PC running off the -5V rail were the ISA slots aside from a few rare motherboards (mainly by MSI that I've seen) that feature onboard sound using the Creative chipset.

There is nothing wrong with your power supply, stop panicking and just hook that bad boy up.
 
Ironsoap said:
Okay, let me be very very specific.

The power supply has 24 pins. but it only has 23 wires. The wire that's missing is nowhere to be found, and it was a ground wire.

If I plug this into a motherboard, can I expect smoke, or do I need to return the PSU.
Click to expand...


Like Matt said, it's not a ground wire. It was a -5V wire and it's not supposed to be there because it's a newer PSU:

http://www.jonnyguru.com/atx/
 
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