What is this part?

[Zefengel]

I have a 2011 MBP
I don't know if this question has been asked before, sorry if it has.

There is this black thing aside the standby light (I don't know if it's a hole or not). I read the manual and it didn't say anything about it.

Does it have any use? Or is it just there for decoration?

 

[Jexta]

If by standby "button", you actually mean standby "light" on the font edge of the machine, then this black spot is the Infrared sensor, so you can use the Apple remote.

 

[Zefengel]

If by standby "button", you actually mean standby "light" on the font edge of the machine, then this black spot is the Infrared sensor, so you can use the Apple remote.

Sorry, I mistook the word, I edited the post, though.
Thanks for telling me, I had no idea it was the infrared sensor.