PSU cable help needed

[ConnorEfc]

So basically I've bought a psu from a friend (corsair rm 750w) and he gave me cables with it which were from a different gpu, however the 24pin cable is too big as shown in the attached pictures. Sorry for poor picture quality, lighting in this room is awful.

 

Basically the psu end of the 24pin cable is 2 rows too big, the one needed for this gpu is two connectors, one with 14 pins and another with 10. This has one with 14 and one with 10. As you can see in the image the 10pin cable fits fine it's just the bigger half. 

 

Is there any way to get around this with an adapter or something along those lines or will I need to replace the cable? If so is there any cheaper alternatives than the official corsair cable as it's £20 which is a little more than I'd like to pay at this point. 

 

The cable I need is this one I believe

 http://www.corsair.com/en-gb/individually-sleeved-ax-i-1200i-860i-760i-atx-24pin-generation-2-black

Labeled there generation 2 type 3 24pin connector 

 

Thanks! 

[samcool55]

Nooooonononono DON'T USE THOSE CABLES.

The pin lay-out on the PSU side aren't standardised so it's possible if they do somehow fit, you short the whole thing out and everything dies. Buy proper cables from cablemod or something like that but DON'T USE THE ONE YOU HAVE. Unless you macgyver them properly but that's a massive and very risky task.

[ConnorEfc]

Just now, samcool55 said:

Nooooonononono DON'T USE THOSE CABLES.

The pin lay-out on the PSU side aren't standardised so it's possible if they do somehow fit, you short the whole thing out and everything dies. Buy proper cables from cablemod or something like that but DON'T USE THE ONE YOU HAVE. Unless you macgyver them properly but that's a massive and very risky task.

I'm not planning to use it really, was just asking if there's a safe way to make it work. The connector is far to big and there's no chance I'd be able to force it in anyway. My last resort will be buying a whole new cable but £20 is a hit more than I'd like to pay when I've just bought new parts for my build. 

 

If anyone knows of a cheaper alternative than the one I've shown above then I would greatly appreciate the help. 

[mariushm]

You have a RM series power supply, which is most likely TYPE 3 and you can only use TYPE 3 cables with it. 

The cables you received are probably TYPE 4 so they won't work

 

The cables on Corsair's website will probably work... they say RM series is supported.

 

pictures below are from jonnyguru forums, and uploaded by Jonny Guru, which now works at Corsair.

 

 

 

[ConnorEfc]

3 minutes ago, mariushm said:

You have a RM series power supply, which is most likely TYPE 3 and you can only use TYPE 3 cables with it. 

The cables you received are probably TYPE 4 so they won't work

 

The cables on Corsair's website will probably work... they say RM series is supported.

 

pictures below are from jonnyguru forums, and uploaded by Jonny Guru, which now works at Corsair.

 

 

 

Yeah, type3 is what I'm after. Other than on the corsair website I can't find this kind of cable anywhere without being part of a package deal. Is £20 likely to be my cheapest option? 

[Oshino Shinobu]

Just now, ConnorEfc said:

Yeah, type3 is what I'm after. Other than on the corsair website I can't find this kind of cable anywhere without being part of a package deal. Is £20 likely to be my cheapest option? 

Most likely. The connectors on the PSU end are non-standard, so you couldn't make your own cables either. 

 

You could try contacting Corsair to see if you can buy a regular 24 pin cable that isn't individually sleeved, it would likely be cheaper. 

[mariushm]

Another option would be to search eBay for a faulty / "for parts" Corsair power supply that uses the same TYPE 3 cables

 

On the other extreme, you could open the power supply and desolder the 14 pin connector and solder the 14 wires directly in the connector making your power supply "semi-modular"

 

The type 3 and type 4 10 pin connectors are identical

 

The type 3 14 pin connector seems to be the same as the left part of the 18 pin connector, but the 18 pin connector is keyed differently, you wouldn't be able for example to cut the extra 4 pins off and shove the connector in the power supply header / connector the holes would be different.

But you could remove the connector from the circuit board and solder the wires directly in the holes where the connector used to be (it's extreme though and ugly like i said)

 

Honestly, in the 14 pin connector the only pin that physically needs to be wired there is the PS_ON wire.  The 3.3v wires and 5v wires could probably be connected to one of those cables with SATA connectors.

The motherboard won't care if the -12v is not there, it's only used for serial ports and your motherboard probably doesn't even have one.

 

 

[ConnorEfc]

1 hour ago, mariushm said:

Another option would be to search eBay for a faulty / "for parts" Corsair power supply that uses the same TYPE 3 cables

 

On the other extreme, you could open the power supply and desolder the 14 pin connector and solder the 14 wires directly in the connector making your power supply "semi-modular"

 

The type 3 and type 4 10 pin connectors are identical

 

The type 3 14 pin connector seems to be the same as the left part of the 18 pin connector, but the 18 pin connector is keyed differently, you wouldn't be able for example to cut the extra 4 pins off and shove the connector in the power supply header / connector the holes would be different.

But you could remove the connector from the circuit board and solder the wires directly in the holes where the connector used to be (it's extreme though and ugly like i said)

 

Honestly, in the 14 pin connector the only pin that physically needs to be wired there is the PS_ON wire.  The 3.3v wires and 5v wires could probably be connected to one of those cables with SATA connectors.

The motherboard won't care if the -12v is not there, it's only used for serial ports and your motherboard probably doesn't even have one.

 

 

Ahh thanks for your insight. I'll have a look on eBay like you mentioned, that could end up being cheaper. Soldering the is quite out of my depth to be honest.