PWM fan

Actually it is alright to use a 4-pin fan on a 3-pin plug. Just be sure you plug it in correctly and it should function just fine.
 
Usually, the fan pins are fool-proof because the wire end has a little slot for a piece of plastic on the mobo.
 
Yes I am aware on how to plug it in but was asking if it was safe since this is a 130cfm fan and probably high amp. I do not want to burn up my fan header.
 
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