In the late 90s in Atlanta I got my first ever Mac computer (Performa iirc??) at an estate sale for free because it was "broken". The way we established that it was broken was because the power switch on the back of it did not do anything. I got home, did some light digging on the internet and determined that the power switch on the back is the main power, and that actually turning on the computer involved pushing one of the keys on the keyboard.

Booted up just fine.

I miss estate sales.