Case fans connection?

[kevzuidwest]

Hello,

i was wondering where you connect case fans, is this on the mother board and/or on the power supply?

 

[cisco001]

3pin or 4pin on motherboard or molex on psu

 

[DRagor]

You connect them to fan headers on motherboard OR straight to PSU via molex adapter OR to fan controller or hub. Don't connect fan to both motherboard and PSU at the same time - it's sure way to fry motherboard.

 

[Paperdoc]

To get the right answer, we need more info, because matching the fan to the mobo's control method is important.

General rule: a mobo can power AND control the speed of fans when they are plugged into a mobo header, as long as that header uses the speed control method that matches what the fan can do. Such automatic control is based on actual temperature measured by a sensor built into the mobo, and the system will change the fans' speeds according to that temperature. As a bonus, the mobo can read the fan's speed and display that for you in the BIOS Setup screens or by using utility software usually provided on the CD that came with the mobo.

Any fan connected instead to a PSU power output of any type can NOT have its speed controlled - it will run full speed all the time.

Please post back here this info:
1. Exact maker and model of the fans you have - or at lest, how many wires come from the fan to the connector on the end - 3 or 4?
2. Maker and exact model number of the mobo.

With this info we can look up your mobo's manual and tell you how to make the automatcic contrl system work for you.

 

[kevzuidwest]

Thanks everyone!