|(via Memory Alpha)|
So apparently the NX-Enterprise was powered by Mac OS X
Was derping around on Memory Alpha and found this picture:
According to this article on Trek Today, something like 16 of Apple's Mac G4 Cubes were used to handle the computer displays on the set. Mike Okuda and others would man these computers and monitor everything that goes up on the displays in the set. Whenever the Enterprise went to red alert, ran a diagnostic, or blipped off and on when the ship took damage, it was done from there. Neat.