SG05B PSU + ASRock z77e-itx power connector not matching

704 Views 4 Replies 3 Participants Last post by WiSK, Aug 21, 2013

fraxture

Discussion Starter · Aug 17, 2013

Hi All, I'm trying to complete my first pc build and have run into a somewhat vexing problem. I'm building inside an SG05B USB3.0 case with a ASrock z77e-itx MoBo. I've gotten so far as to try to connect the PSU to the board. There are two power connectors on the board, a 8-pin (ATX12v1) connector and a 24-pin ATXPWR1. The trouble is that the SG05's psu does not seem to have matching connectors. It has a 4-pin ATX12v connector and not an 8-pin. AND although it has a 24-pin connector, the pattern of square to curved pieces seems to be reversed, so that it will not fit into the MoBo connector.

Did I somehow buy the wrong mis-matching pieces? I would have thought this was standardized? Any ideas? I could really use any input!!

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fraxture

Discussion Starter · #2 · Aug 17, 2013

Never mind, I think I've figured it out. I was mistaken. It was a 20-pin and then a separate 4-pin piece. The confusion came from the fact that in the manual it described it as a single 24-pin connector.

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voklskier4452

· #3 · Aug 17, 2013

It should absolutely be standardized. Only way this could happen is if somehow the board/PSU manufacturer got a bad batch of pieces. When plugging in the 24pin the latch on the PSU end should be on the side away from the board. Check that and show us pictures if that doesn't fix it.
As for the 8pin EPS connector, use the 4 pins closest to the sata connections. Page 33 of the manual will show you how to do this.

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fraxture

Discussion Starter · #4 · Aug 20, 2013

So as I mentioned in my second update, the connector from the psu is a 20-pin connector, but it is bundled with a another 4-pin connector. There is span enough to attach the 4-pin connector into the 24-pin female connector on the MoBo (although it does not seem to fit in all the way (there is about 1-2mm space because the plastic section on the 4-pin connector has some plastic pieces extending from it that run into the 20-pin piece). What is strange, however, is that if I hit the power button, the system seems to boot up alright with or without the 4-pin piece also plugged in. Does anyone have any guidance here? I find this a bit confusing... The SG05 manual gives no hints that I can find...

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WiSK

· #5 · Aug 21, 2013

Quote:

Originally Posted by fraxture

So as I mentioned in my second update, the connector from the psu is a 20-pin connector, but it is bundled with a another 4-pin connector. There is span enough to attach the 4-pin connector into the 24-pin female connector on the MoBo (although it does not seem to fit in all the way (there is about 1-2mm space because the plastic section on the 4-pin connector has some plastic pieces extending from it that run into the 20-pin piece). What is strange, however, is that if I hit the power button, the system seems to boot up alright with or without the 4-pin piece also plugged in. Does anyone have any guidance here? I find this a bit confusing... The SG05 manual gives no hints that I can find...

The 20+4 pin connector belongs in the 24-pin socket on the motherboard, you put the 20-pin connector in first, and the 4-pin part in second.

There is also a 4+4 pin connector which should be plugged into the (4 or 8 pin) EPS socket on your motherboard, usually it's near the CPU.

Your system may boot with incorrect connectors, but beware that you can damage components on motherboard or PSU like this.

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