Help needed! Case fan + motherboard

Solution
3 pin connector can be connected to 4-pin header. The leftmost pin of the header stays unconnected.
If you have 2 fans, and your motherboard has only one CHA_FAN header, you will need to buy 'Fan power adaptor cable'.
3 pin connector can be connected to 4-pin header. The leftmost pin of the header stays unconnected.
If you have 2 fans, and your motherboard has only one CHA_FAN header, you will need to buy 'Fan power adaptor cable'.
 
Solution