The fan connector will have two guides 1 and these will need to line up with the tab 2 that is on the motherboard.
Connect 2 pin fan to 3 pin motherboard.
Desktop board has a 4 pin fan header.
Highly recommend if you need a 2 to 3 pin fan connector.
How to connect a 3 pin or 4 pin fan to the motherboard 1.
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Fans and on board fan headers are backwards compatible.
It should snap right into the 3 pin jack using 2 of the jacks pins.
Proper fan connector placement is shown in the figures below.
Fan has a 3 pin power connector.
A 2 pin fan connector will connect to 3 pin mobo jack if you align the key on the plug little vertical plastic stripes.
Next press down until the fan connector until it is fully connected to the motherboard header.
There is no fan control.
Just a side note.
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