Is it possible RAM not compatible with Macbook Pro?
The RAM you listed there will work perfectly fine.
Whenever buying RAM just make sure you have the correct type (DDR3 in your case) and the correct speed (1333 MHz or PC10666 in your case).

It won't 'break' your MacBook but instead it just won't boot if you have the incorrect type or speed of RAM in your MacBook. RAM has no saved state when turning your computer off so logically it couldn't harm your MacBook if you switch it out for incorrect RAM and then put the correct one back in.

So summarized: The RAM you listed will work but in the future always check for speed &amp; type (I like to use MacTracker for this).