Apply the thermal grease to the CPU.
Pull up the lever to release the fan from the heat sink.
Use a cross-head screwdriver to remove the screws on the retention, but remain the retention.
Place the heat sink on the CPU.
Use a cross-head screwdriver and the supplied screws to tightly screw the clip th the retention.
Choose an appropriate direction for the bracket and then place it on the heat sink.
Push down the lever to secure the fan to the heat sink.
Install the speed controller to a 3.5" front bay.
Connect the fan to the fan speed controller.
Connect the fan speed controller to the 3-pin fan header on the motherboard.
Complete.