said by 18172841:Just get a splitter? I have 3 fans connected to my cpu header... it does have an auxiliary molex for power as I do not want to blow the fan header with 3 fans pulling juice but you should be fine with 2 not super high draw fans on one header.
You are talking about a product like this:
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www.newegg.com/Product/P ··· 12119248The Ground and a steady +12v supply comes from the 4 pin Molex connected to the PSU; The speed of each fan is controlled by a pulse width modulated signal from 4th pin of the fan header and connected to circuitry within the fan that varies the fan's duty cycle.
Adapters like these don't work on fans with 3 or 2 pins (not PWM) because the speed of these fans is controlled by varying the supply voltage. If you drive a 2 or 3 pin fan from these you will just be driving them at full speed (12V)
You might be able to use a normal splitter, but that would mean both fans are being powered by one fan header; which depending on your fans, and the power rating of that header, might blow the header on the motherbaord. You would also need something to convert the molex to 3 pin :/
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www.newegg.com/Product/P ··· 12200455