Raspberry Pi Massive Heat Sink (4K)
Our Raspberry Pi was overheating while watching online videos. The half thermometer symbol comes on at 80 degrees C. This $3 massive heatsink allows the Pi to stay below the 65C mark.
I found the two fans don't do anything, at least at normal operating temperatures, however they do cause my Pi to throw a low voltage warning symbol (lightning bolt).
Warning: Mis-wiring your Raspberry Pi can ruin it and/or any accessories.
Information/drawings offered as is. You are solely responsible for
how it is used. If you don't know, learn first or do not do it.