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Switch dock fan cooling is something Nintendo should have included in my opinion. The Switch runs warm in portable mode. The poor design of the Switch dock and the overclocking while docked make it run too hot. Nintendo designed a nice looking dock that scratches unprotected screens and traps heat. The intake airflow is partially restricted and the plastic surrounding the handheld acts as an insulator complete with heat insulating air gaps. The Nintendo Switch ( handheld) has an internal fan just below the top exhaust vent. There are 2 intake vents on the back of the system near the bottom. The best approach to better cooling the Switch while docked would draw hot air out of the top exhaust vent. Unfortunately, how to securely mount such a fan and remain easily removable would be a challenge. My solution was to mount a fan in the hinged door of the dock. It blows air into the intake vent to aid cooling. I have also drilled vent holes in the rear panel after removing it. These vent holes allow the open space between the plastic to ventilate the heat trapped in this area of the dock. Testing so far looks promising. The Switch's internal fan is barely running afterward, and the speed increases only after the dock cooling fan is unplugged for a while.