Thermaltake today introduced the SWAFAN 120 RGB and SWAFAN 140 RGB case fans optimized for used in liquid-cooling radiators. These fans come with easily-swappable impellers, and include two sets of them, each with a different airflow direction. You could just flip a case fan around to reverse its airflow direction, but that would expose the ugly reverse side of the fan hub with its regulatory markings and wiring sticking out, not to mention the pillars of the frame that hold the hub in place. This approach ensures you have just the impeller and its pretty RGB setup facing you. This is especially useful when you have the radiator sandwiched between two sets of fans in a push-pull configuration. The swappable nature of the impeller also makes it easy to clean these fans.

Both the SWAFAN 120 RGB and SWAFAN 140 RGB come in black and white color variants, and in packs of three fans that include an RGB controller. The fans feature hydraulic bearings rated for 40,000 hours. The fans each take in a 9-pin connection that resembles the USB 2.0 headers on the motherboard, which it uses for both power (main function) and RGB control. The included lighting controller is hence essentially a USB 2.0 hub that interfaces with the motherboard over a USB 2.0 header, and takes in a 4-pin Molex for additional power.