you can turn this off. system settings -> power adapter -> 1. option I've run into https://forums.macrumors.com/threads/16-is-hot-noisy-with-an-external-monit

you can turn this off. system settings -> power adapter -> 1. option I've run into https://forums.macrumors.com/threads/16-is-hot-noisy-with-an-external-monitor.2211747/page-20?post=28166966#post-28166966 https://forums.macrumors.com/threads/16-is-hot-noisy-with-an... so I need to use clamshell mode.