Can i connect case fan to psu directly without adapter?

[roudy-s]

Hello i want to connect my case fans to my power supply directly because i dont have any kore place on the mobo and we dont have molex connectors here or adapter as they are called so what can i do i saw that i can use paper clip to connect them to psu or wiring the cables of the fan to the molex can this harm my computer or psu or am i ok if i do this and thank you

 

[13thmonkey]

If you have to ask the question then you aren't familiar enough with electronics to be able to do it safely. DO NOT under any circumstances use a paperclip.

 

[roudy-s]

No my brother i am familiar but just want to make sure that it will not harm my pc

 

[13thmonkey]

I'm sorry, but I don't think that you are given that you don't know if it will harm your PC.

How many fans do you have, and what temps are you seeing? Do you even need another fan.

 

[roudy-s]

I have a fan i and want to connect it thats it more the fans more the temp will stay cool so i want to install my old cpu fan to the case i have 2 more rooms on my case

 

[Karadjgne]

Yes, you can use a fan directly to the psu without adapter under 1 condition. Some older design fans used a molex connection, same as what's on the psu. Other than that No you cannot go directly to the psu, the 3 or 4 pin on the fan is different. Cpu fans are almost always PWM 4pin, and require the motherboard to use a 4pin PWM signal.

Using a MacGyver technique like paperclips or direct application, bypassing the connector WILL eventually be harmful to the psu/pc. It's called FIRE. Burning out a psu or burning down a pc is pretty much a given result, so Yes, I'd consider that harmful. It's not the result that's often mentioned in those backwoods YouTube videos.

 

[madmatt30]

Pretty sure every country in the world sells molex adapters to 3/4 pin connectors.

But yes you can obviously run a fan straight to psu IF you know what you're doing , you only need a 12v & a ground/common.

 

[13thmonkey]

Pretty sure every country in the world sells molex adapters to 3/4 pin connectors.

But yes you can obviously run a fan straight to psu IF you know what you're doing , you only need a 12v & a ground/common.

My point is that it is trivially simple to understand if there is a risk, if you don't know that much, then you don't know what you are doing.

A fan controller would work well.

 

[madmatt30]

^ Oh I agree absolutely , Im not condoning he rigs directly to the psu cable even if he does know what he's doing anyway.

Especially repurposing an old cpu fan , an intel fan hits 3000rpm & an amd over 4000rpm at a straight 12v - they'd both be stupidly noisy as a case fan running full speed