The RTU performs its function perfectly, the operating temperature is very well reduced. Despite lasting operation of the laptop no disturbances occur due to overheating. Although a previously-used by me different brand was initially a little quieter, but a bit too small on the configuration, so that the computer it was not safe. In addition, the operating noise grew louder probably due to contamination. These fans seem to me more solid, so I'm optimistic about the longer-term operating quality. The extra USB port allows you to connect a mouse via the fan, so that the computer can be easily removed without great cable clutter and infected again. So first impression: around recommendable.