11-24-2009, 10:12 AM #1
what does the round button with green lights by the headphone jack do?
- Member Since
- Nov 15, 2009
On a new macbook pro, what does the little round button with green lights by the headphone jack do? Flame away.
11-24-2009, 10:27 AM #2
It's a battery indicator. The number of lights that light up shows the amount of charge remaining. Mainly useful to check the battery's charge while the machine is not running.
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