Hi.
This button is a button that activates a battery gage used by sighted people to 
lazy to turn on they're computer to check the battery power.


On 2011-05-29, at 11:19 AM, Robert Hooper wrote:

> Hello all:
>  
> I have noticed that there is a small round button about three finger widths 
> away from the headphone jack on my 2010 MacBook Pro. When pressed, there 
> aren’t any noticeable effects. Naturally, therefore, I was wondering about 
> the purpose of this button—it is between the audio out jack and the front of 
> the computer. Any insight about the ambiguous existence of this intrusive and 
> distracting circular depression would be appreciated.
> Thanks,
> Robert Hooper
> [email protected]
> The Ohio State University
> 553 Morrill Tower
> 1900 Cannon Drive
> Columbus, Ohio 43210
> (740) 856-8195
>  
> 
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