Connecting them to the motherboard would let you control fan speed in BIOS.
Basic Differences
Can't find your answer? If you want to use the fan controller built into the case, then you will need to run a power line form the psu to the fan controller input, then hook up the fans to the output of the fan controller going to each fan itself. It will be important to identify the type of power connector the fan controller uses.
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If the fan controller uses the small 3 pin plug, then you will need an 4 pin molex to 3 pin fan adapter. Otherwise, you can connect the fans as suggested in the previous posts. This is not necessarily a bad thing as you can have the 3 fans that come with the case hooked up to always run, and then connect the additional fans off the controller and turn them on as you need more cooling.
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Can I hook up all of the fans molex connectors together into one long strip and then plug that strip into the power supply? Also some of the fans molex connectors are 4 ports and some only have 2. You need to look at the manual of your motherboard. It will have a schematic of the board.
how can I install multiple case fan??
It will show you where the connector is on the motherboard. The only problem you have now is replacing the side panel fan with a new one! Worst case scenario, the fan will fail. Make sure you don't leave any wires exposed. One clue would be to check the thickness of the wires.
Which wire is negative on this PC fan? - Electrical Engineering Stack Exchange
Wires connecting to molex are typically thicker than the ones that connect to the mobo. That's not a rule, just a general observation. If the wires did pull out of a molex connector, it's pretty easy to reconnect them: Using the end of a paper clip, push the pins connected to the red and black molex wires out through the back of the connector. Wrap the wire around the base of the pin, or around the exposed end of the wire that's still connected to the pin. Then reinsert the pin.
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Wires from fan on side panel - where do they connect? Mick Mick 4 28 You may find they were connected to a molex adapter that is being used for providing power to another device in the machine. The frequency of the pulsed signal changes the speed of the fan. This common method of controlling an analog device fan, light, heater with a digital control is called pulse width modulation, or PWM. By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies.
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Three-wire and four-wire CPU fans, what's the difference? The one wire is a control wire, allows the fan, to be set to a certain RPM.
What did your research say was the difference? So that would mean that all 3-Wire fans would be unispeed?
I'll have to double check, but I think I've seen some laptops with variable speed fans that only have 3 wires. I came here just to see the bonus answer: RockPaperLizard It does not mean that. That fan likely was connected to a fan controller or tomshardware.
How do I hook up my case fans to my PC?
Three-wire fan connecting to a four-pin fan header Fan header pinouts Pin: When connecting a three-wire fan to a four-pin fan header, the fan is always on; there is no fan control Four-wire fan connecting to a four-pin fan header Four-wire fan connecting to a three-pin fan header Pin: Lukic Mike Lukic Mike 41 1. Good info, thank you! And welcome to SuperUser!