The Inter-Tech Argus L-12025 120x120x25mm is a smooth running 120 mm fan, makes its rubberized pads in the fan corners on both sides of the fan for a vibration-free operation. So the option is left open whether the fan suck cool air or to carry warm air from the enclosure. The connection is done via a 3 pin connector on the motherboard or a 4-pin power connector located on the power supply.