The Thermaltake Frio OCK
Figure 4 shows the front of the cooler, where a 130 mm fan with semitransparent blades forces the air into the heatsink.
Figure 5 shows the side of the cooler. The heatsink is barely visible under the plastic cover.
Figure 6 illustrates the back side of the cooler, where the second fan extracts the air from the heatsink. Both fans have only one power connector, which has three pins. It also has a small potentiometer where you can adjust the rotation speed.
Figure 7 presents the top of the cooler. Here you can see the plastic cover, which has a transparent blue window at the center.