An old Mac mini doesn't have to end up in a drawer once a newer model takes over your desk. Turning an old Mac mini into a home server is one of the more practical uses for hardware that's small, quiet, and easy to tuck away where noise and space matter. One real-world example makes the case: an M1 Mac mini running Time Machine, Content Caching, file sharing, and Plex together idled at about 6 watts, climbed to roughly 7 watts during 4K Plex playback, and peaked near 10 watts, replacing an...