Modular psu cables - ways to test compatibility?

[tech_noob]

Question on modular PSU replacement cables. I have a Silverstone DA-750 gold and I am looking for additional sata cable I can use with this. I couldn’t find it anywhere online in India so tried ordering one from ebay. found one which was for a Silverstone PSU but a different model. took a gamble and ordered but when I checked the pin layout on 6 pin connector, it looked different from the original cables so didn’t use it.

However, I have another Gigabyte 750W modular PSU (GP-P750GM) in another system which stopped working last week. when I was preparing to send it for potential RMA (haven’t sent it yet), i noticed that pin layout on sata cable for this PSU matches with the extra cable I got from ebay. now I have few questions if someone is experienced enough to answer:

1. Is there a possibility that pin layouts for different brands PSUs might be same (I assume its very much possible) and in that case, would the cables be interchangeable?
2. Can I just visually inspect and compare the pin layout and that should be enough to confirm compatibility?
3. Any tests i can do to make sure the cable works with the PSU (When I get it back of course)? wouldn’t want to dissemble whole PC, only to find out the cable doesn’t work.

Thanks for any suggestions anyone might have. or if anyone has any leads on where I can buy additional cable for my Silverstone PSU, that would be super helpful and potentially skip my compatibility questions completely

[AlphaSkull]

First of all, never mix and match PSU cables that are from different brands. period

[tech_noob]

cant be that straight forward man. These are just cables and people DIY them all the time, I think. While I am not an electrician, I hope there are better ways than this generic statement

[Heisen]

post picture of the connectors of the cable

[AlphaSkull]

DIY is a completely different thing from stock cables. The factory cables may look the same and slot in perfectly, but on the other end of the cable, the ground pins and voltage pins may differ. As per my knowledge, someone on TE does make custom cables, so you might as well reach out and ask for a custom cable instead mixing the cable.
One way to test it out is to know the power pins on the motherboard.
example.

Now that you know the pin layout, you will have to probe using a multimeter.
On the PSU side, this might differ.
I do have an example of why it is bad, I will link if I find it.

[AlphaSkull]

Here it is from the tech Jesus himself
Stop Mixing modular PSU cables

EDIT: And also, you can remove the stock wire from its housing and rewire it.

The rest @Heisen will help he has a better experience than I do.

[tech_noob]

Thanks man. this more eloquently made me realize I am way over my head trying this shit :). do you remember the person who makes custom cables? that’s my preferred route anyways. just couldn’t find any leads.

[tech_noob]

Hey, so again, I spoke too early and the pin layouts are not same :D. I must be dyslexic. they are actually other way around

also to be clear, I am actually looking for a completely different connector but didnt take its picture because its currently in my system. the model is Silverstone DA750 Gold.

This is the one from ebay:

and this is the one on the gigabyte one:

[AlphaSkull]

Here is the link to the custom cable. I hope this is the one.
custom-length-cable-service

[tech_noob]

Thanks so much man. very helpful

[Heisen]

Okay so pin layout don’t match then it’s out of question.

But if they do, then as @AlphaSkull said, you can just probe each pin on both sides of one cable, and check if another cable is exact match or not.

This simple continutiy tester is enough for checking.

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Even if thickness of wires don’t match exactly it’s not a problem in your case cause it’s for sata cable, very light load.

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@b.life is the right guy for the job.

[tech_noob]

Thanks a lot for taking the time to respond @Heisen . I have messaged @b.life . fingers crossed now