Where should I plug in this cable?

[zMartin]

There is a cable to the PSU which has 3 molex ports to which I'll connect some molex fans, but there's also a connector with 4 holes. What should I do with it? The only 4 pin connectors I see are CPUFAN2 and SYSFAN3.

 

[rolli59]

Could be a floppy connector and you do not need to connect it to anything neither do you need to connect all other connectors only the ones you need.

 

[mickypheonix]

Hi zMartin
can you take a photo of it , if the cable looks like this with one of these ends

it is your 12v eps 4pin power that connects near your cpu to give it power

 

[mickypheonix]

or this one is a floppy drive power connector

 

[zMartin]

Hi zMartin
can you take a photo of it , if the cable looks like this with one of these ends

it is your 12v eps 4pin power that connects near your cpu to give it power

https://wiki.installgentoo.com/images/2/2d/4pin_floppy.jpg

I think it is a floppy connector. If I just plug the fans into the molex connectors which connect to the PSU then will I have any control over the fans? Or will they always spin at 100%?

 

[mickypheonix]

no leave it unplugged , it is for a floppy disk drive , if you do not have a floppy drive then you do not need to plug it in to anything

EDIT: if you try to plug the floppy connector into your motherboard you will damage your motherboard and possibly short it out , especially if you try to plug it into a fan header

 

[rolli59]

Hi zMartin
can you take a photo of it , if the cable looks like this with one of these ends

it is your 12v eps 4pin power that connects near your cpu to give it power

https://wiki.installgentoo.com/images/2/2d/4pin_floppy.jpg

I think it is a floppy connector. If I just plug the fans into the molex connectors which connect to the PSU then will I have any control over the fans? Or will they always spin at 100%?

They will run 100%

 

[mickypheonix]

fans plugged into the 4pin molex will run at 12v , flat out

 

[zMartin]

fans plugged into the 4pin molex will run at 12v , flat out

So it's normal to have every single case fan at 100%??? WTF

 

[mickypheonix]

it is fine , they are designed to run flat out , if you want more control and the ability to lower fan speeds i suggest you hook the fans up to the fan headers on your motherboard rather than by 4pin molex.

 

[zMartin]

it is fine , they are designed to run flat out , if you want more control and the ability to lower fan speeds i suggest you hook the fans up to the fan headers on your motherboard rather than by 4pin molex.

I have 2 LED fans which have 3 pins and connect to the motherboard's 4 pin SYSFANs. And the rest are molex. I can't connect molex to motherboard and I can't do anything about the 3 pins.

 

[mickypheonix]

what is your motherboard ? do you not have 3pin fan headers on it ?

 

[zMartin]

what is your motherboard ? do you not have 3pin fan headers on it ?

Z87-G45, I can't see any 3 pin headers, I've looked for a long time.

 

[mickypheonix]

you dont have any 3pin fan headers ,
- 2 x 4-pin CPU fan connectors
- 3 x 4-pin system fan connectors

 

[mickypheonix]

plug them into the 4pin like this ,

 

[zMartin]

you dont have any 3pin fan headers ,
- 2 x 4-pin CPU fan connectors
- 3 x 4-pin system fan connectors

Yes.

 

[zMartin]

you dont have any 3pin fan headers ,
- 2 x 4-pin CPU fan connectors
- 3 x 4-pin system fan connectors

Yes.

 

[zMartin]

I did that, it's 1,2,3,4 from the left isn't it? Most people say you need the 4th pin so you can control the fan.