[SOLVED] Molex connector problem ?

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ferguson1951

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Feb 19, 2017
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Hello everybody.
I am writing from Italy.
I have an ATX PSU with various output cables including a 4-pin Molex which I think is for the mobo power supply.
But my micro ATX mobo has an 8-pin connector.
How do I go about solving this problem ?
Your help will be much appreciated.
Thanks a lot and best regards

Mobo: Asus Prime B364m k
PSU: Delta Electronics 350 w GPS-350EB-200 B
ram: Samsung DDR4 4Gb.
GPU PCIE card : (arriving) ASUS EN 8400 GS SCHEDA GRAFICA VIDEO SILENT PCI EXPRESS 512 MB GPU GRAPHICS CARD
CPU: Intel i5 8500
Case: HP ProDesk 400 G3 MT
 
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ferguson1951 said:
I have an ATX PSU with various output cables including a 4-pin Molex which I think is for the mobo power supply.
Click to expand...
Molex is for peripherals like old storage devices, fans and waterpumps.
ferguson1951 said:
But my micro ATX mobo has an 8-pin connector.
Click to expand...
The 8-pin connector on the mobo is for the CPU. You need to connect the 8-pin (or 4+4 pin) CPU cable to that.

What's the brand and model of the motherboard and PSU?
 
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ferguson1951 said:
I have an ATX PSU with various output cables including a 4-pin Molex which I think is for the mobo power supply.
But my micro ATX mobo has an 8-pin connector.
How do I go about solving this problem ?
Click to expand...
What is model name of your PSU?
What is model name of your motherboard?

Can you provide photos of available cables on your PSU ?
(upload to imgur.com and post link)
 
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My PSU IS DELTA ELECTRONICS , it has the usual SATA connectors, one big 24 pin connector and one 4 pin MOLEX.
The mobo is

ASUS Prime B365M-K . I cannot find a connector for a 4 pin Molex. There is only one for an 8 pin one​

 
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ferguson1951 said:
My PSU IS DELTA ELECTRONICS
Click to expand...
What is model name of the PSU?
(model name is written on PSU info label)
ferguson1951 said:
it has the usual SATA connectors, one big 24 pin connector and one 4 pin MOLEX.
Click to expand...
Show photos of available connectors.

Molex connector is this one:

1200px-Molex_female_connector.jpg


You need this type of connector.

61jkASCgW5L._SL1391_.jpg
 
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ferguson1951 said:
What I bought, which will be arriving tomorrow, is an extension with an 8 pin male connector on one end and 4 pin male Molex on the other. sEE PHOTO:
https://imgur.com/1sucmgX
View: https://imgur.com/1sucmgX
Click to expand...
Show photo of your actual adapter (not some random photo from internet).
Connector in your photo is PCIE 8pin.

CPU EPS 12V 8pin connector (goes into motherboard) is very similar to PCIE 8pin connector (goes into graphics card).
They are not compatible.

main-qimg-60e9f5d52f0ab0292b9fa415ade61953-pjlq
 
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--SID-- said:
This cpu is not compatible with B365 chipset. You need 8000 or 9000 series cpu.
Click to expand...
Hello. Now the build has an i5-8500 still nothing works. Like there was a short-circuit somewhere. I inserted a PCI test card and turn the PC on but the card is dead too. I unplugged everything but the 24 pin connector and the 4 pin one but no result. The PSU by itself works fine.
 
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What is that?

Why did you cut PSU cables and put some thin wires in the middle?
Do you want to burn down your house?
They will melt for sure. They look multiple times thinner than normal cables.

What is that weird card in PCIE slot?

Is motherboard installed on standoffs? If it is not, then it's probably shorting out.
 
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ferguson1951 said:
I did it because the PSU cables were too short.
Click to expand...
PSU is upside down.
If you installed it in correct orientation, cables would be long enough.

1. remove motherboard from case.
2. disconnect all unnecessary cables (USB, audio front panel, sata).
3. remove that weird card. It probably isn't even PCIE compatible.
4. CPU fan should be connected to CPU fan header (not system fan header).
5. Have only 24pin and 4pin CPU power cables connected and start button cable.
6. Make sure, you have spliced CPU power cable wires connected correctly (yellow to yellow, black to black).

Then try to start your pc.
 
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Test with another PSU. One that's not old trash and with long enough cables.

What's that PCI-e card?

Are there spacers between the mobo and the case. Don't see any screw btw. There's a short if the motherboard touch the metal of the case. You can fry everthing that's connected to the motherboard.
 
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Thank you SID. Let me just think a bit over all the things you told me and I'll come back to you as soon as possible. Thank you.

One thing I can say just now is that I am a pensioner but not a rich one so I would like to do the job with what I got without having to buy new things.

Having said this, I see that the case is such that the mobo has to rest on the case bottom because if I used standoffs the various USB , VGA and other connectors will not fit into the holes for them to come out so that they can be used. The previous HP mobo had no standoffs and even if it had I don't understand how they can prevent a short since they are bronze (metal) and they must surely convey current to the case ?
Am I wrong? See you later and thank you. I am trying to learn.
 
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