Even when on power adapter, it still goes to sleep after 10 minutes of inactivity by default. I remember my MacBook Pro's default power settings were to never go to sleep when using power adapter. Is there a reason why it's not the case with MacBook Air. The reason I'm asking is that I need my computer to stay on indefinitely to maintain uninterrupted internet connexion (for business). If I change the settings accordingly, will it harm the machine in any way? Any input would be much appreciated.