You'll need to disconnect this four wire connector from the motherboard.

The best way we've found is to use mini pliers. Pull up on one side then the other. Go back and forth one side at a time until it pops off.

The power supply can now be removed.

Use caution as this connector is easily pulled off the motherboard.

Be sure that you are pulling on the connector for the wires that go to the power supply itself and NOT on the connector on the motherboard.