2-Pin connectors on 650D?

angaddev

Distinguished
Jan 10, 2012
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here it is
kcfntx.jpg
 
That is for you to connect the fans you want to control.

From corsairs site
"four-channel fan controller should you want to make your own choice between noise and performance."

So, yeah, just connect your fans to it. I recommend letting the board control the cpu fan, but if you want, the case fans can be connected to those.