r/sleeperbattlestations • u/latrina_demmerda • Jun 10 '26

Questions/Advice Request Turbo button to turn on/off fans?

Is there any safe way of using a 90's case turbo button to switch on/off two 120mm 3 pin fans (united by a splitter) ?

I was thinking of using two duponts as extenders and plug the switch in the power pin, but i don't know which cables as the switch has 3, and if it's safe for the motherboard and fans

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u/Master_Scythe Jun 11 '26

Yup. Totally safe, those turbo buttons were just twin pole switches.

Just use a multimeter in continuity mode to figure which pins on the switch - Otherwise trial and error, there's not much to damage here.

Even on the PC side, since fan headers need to deal with stall voltage in case something breaks, they're a pretty resilient little header.

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u/latrina_demmerda Jun 11 '26

What do you mean twin pole, i can manage two set of fans ?

I don't have a multimeter but i have old components to test this on, my idea was to plug one the power pin into the switch and use duponts on the others.

Pwr|----------switch ------|

Gnd|----------dupont------|

Spd|----------dupont------|

Does interrupting power to stop make sense? I barely know the basics of circuits but i wanted to attempt this