I am a recent convert from 20 years of the PC/Windows side. I have a totally silly question. I purchased a used MacBook Pro to start to get more familiar with MACs and I was wondering if the power button to the right of the Delete key is supposed to light up? There is no problem with the laptop and all works fine and the button does what it is supposed to do as far as turning the laptop on but coming from the PC world, I am used to seeing the power button light up when the computer is on. Thanks.