Proper fan connector placement is shown in the figures below.
Connect 2 pin fan to 3 pin motherboard.
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Fan has a 3 pin power connector.
Just a side note.
The fan connector will have two guides 1 and these will need to line up with the tab 2 that is on the motherboard.
The ends on mine are black and not white as shown.
There is no fan control.
Desktop board has a 4 pin fan header.
Highly recommend if you need a 2 to 3 pin fan connector.
The connector itself is only 5 inches in length so you may have to use an extension to reach where you want it too go.
It should snap right into the 3 pin jack using 2 of the jacks pins.
When using a 3 pin power connector with a 4 pin fan header the fan will always be on.
Next press down until the fan connector until it is fully connected to the motherboard header.