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Can I connect CPU fan directly to power supply?
Like 007agentHP said, connecting the cpu cooler fan directly to the power supply will just make it run full speed. There’s no real downside in terms of temps, only in noise maybe.
Can fans be plugged into power supply?
Yes you can plug a three pin fan into a four pin header, or the other way around. There’s a notch on the motherboard and fan pin header so that you plug it in the right way.
Do PC fans come cables?
No,all the cables will be there. You shouldn’t have to buy any extra cabling,except for the random molex to sata connectors if you have more drives than the psu can give sata power to. Sometimes the case or motherboard you choose will not include some cables that are necessary for a build.
Do Case fans plug into motherboard?
To connect your fans to your motherboard, you’ll need to look for the appropriate headers, such as CHA_FAN above (chassis fan) or SYS_FAN (system fan). Most of your fans will have either three or four-pin connectors, so you’ll need to look for the corresponding headers on your motherboard.
Where does the power supply fan plug into?
It is recommended to mount the power supply with its ventilation top cover facing DOWNWARD. The fan in the power supply will take in the warm air inside the computer case, and the power supply will exhaust the air through the back.
Do PC fans control themselves?
Well, the fans won’t do that by themselves. but the mobo fan headers are designed to do that job. More specifically, the mobo normally has at least two different groups of fan headers.
Can a case fan plug directly into a PSU?
Yes you can but most will have the adapters setup at 12V so it will run the fan at full speed and may be loud. I don’t have enough motherboard 3 or 4 pin connectors for my fans. I currently have 6 case fans that I need to connect. Buy one of these, whichever you think would fit or look the best.
What kind of power supply does a 4 wire fan use?
Following this 4-Wire Fan Description (link 1 in comments) I have connected the yellow fan power wire to the red wire on the power supply and the black fan ground to the black power supply wire. The green tach and blue PWM wires have been left unconnected to anything and are simply hanging free.
How do you test a fan on a PC?
You could test the fan on a working PC set-up carefully using a old style diskdrive power connection, just stuff the ground and 12V wire ends into the correct holes (black and yellow) and hold them in place with your fingers or tape when you turn the PC on. Thanks for contributing an answer to Electrical Engineering Stack Exchange!
Can a PWM fan be changed to a 12V fan?
Yes that is correct for the PWM units they will change not the 3 pins however just check closely, it’s physically impossible since the PCB is wired that way. I use the same unit for fan control and designed it to draw 12V using the same 3 pin setup for lighting while fan speed for PWM fans.