Raspberry Pi has quietly updated the CM5 IO board and case so that it's possible to use both a heat sink and fan at the same time (previously you could only fit one or the other). https://www.hackster.io/news/raspberry-pi-revises-the-compute-module-5-io-board-io-case-designs-for-better-cooling-276c70513415 #RaspberryPi #RaspberryPiCM5 #RaspberryPiCM5IOBoard