I've seen such a key on a Sony Vaio. The label was nothing but explicit, I actually had to look for help. But the button would turn the computer on, and get to

I've seen such a key on a Sony Vaio. The label was nothing but explicit, I actually had to look for help. But the button would turn the computer on, and get to the setup menu. Nice touch. Obviously, it was the only nice thing about this terrible machine but that's a different story.