On 03/02/16 10:09 AM, Andre Müller wrote:
This works maybe. Some motherboards don't boot, when there is no speed signal at the cpu fan connector.

German <gentger...@gmail.com <mailto:gentger...@gmail.com>> schrieb am Mi., 3. Feb. 2016 um 16:01 Uhr:

    Hi people,

    Here is the thing. Building new little build.
    My motherboard accepts only 3-pin CPU connector,
    but sysfan has 4-pin. My CPU cooler has 4-pin connector (PWM).
    Is that a good idea to plug CPU fan connector to SYSfan connector?
    Thank you.


My experience has been that the 4 pin fans work just fine with a 3 pin header. The 4th pin is an extra mode to control the fan but most motherboards can also use the older 3 pin method. The connector is built to allow that to happen.

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