“Slightly fiddly to install and a bit noisier than i was expecting inside the official Pi 4 case. Worked fine though, but in the end i decided to give up on the official case and get an Argon ONE case which includes a quieter fan and am glad i did.”
“Easy to install and keeps my Pi 4 cool. The only downside with this simple solution is that shutting down the Pi does not stop the fan and this would require some simple electronics/software. Perhaps the basis of another offering from Pi Hut.”