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Case fan has 3 pins but new fan connector has 4 socket

Jai-Jai
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Hi all. I'm trying to replace the rear fan on my NZXT Noctis 450. The actual fan connectors on the  case eachhave 3 pins. But the connector on the new fan has 4 holes - can I still use it?

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1 minute ago, Jai-Jai said:

Hi all. I'm trying to replace the rear fan on my NZXT Noctis 450. The actual fan connectors on the  case eachhave 3 pins. But the connector on the new fan has 4 holes - can I still use it?

Yes, you can still use it.

You can only plug in the cable one way too, because of plastic notches/catches on the board/fan headers.

 

Sometimes you do have to set fan control to 'DC' mode, instead of 'PWM' mode.

Long story short, the 4th pin is PWM, which allows for more granular control of the fan speed.

"We're all in this together, might as well be friends" Tom, Toonami.

 

mini eLiXiVy: my open source 65% mechanical PCB, a build log, PCB anatomy and discussing open source licenses: https://linustechtips.com/topic/1366493-elixivy-a-65-mechanical-keyboard-build-log-pcb-anatomy-and-how-i-open-sourced-this-project/

 

mini_cardboard: a 4% keyboard build log and how keyboards work: https://linustechtips.com/topic/1328547-mini_cardboard-a-4-keyboard-build-log-and-how-keyboards-work/

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Thanks for the info minibois! Apologies for the absolute noobness of the questions! Its now up and running again. 😃

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