Can I upgrade the RAM on my 2011 MacBook Pro I am planning to purchase a used MacBook Pro from someone, and the configuration is as mentioned: 


MacBook Pro 15" (A1286) Late 2011
i7 2,2 GHz
8 GB RAM
500 GB HDD


Will I be able to upgrade the RAM to 16 GB for this model of MacBook?
Yes, the mentioned model of MacBook Pro is user upgradable.

The maximum RAM supported by the Late 2011 MacBook Pro is 16 GB. You can refer to the specifications for this model here:


Table of second generation MacBook Pro models


Look for the column corresponding to the mentioned model (Late 2011).


  Memory &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4 GB (two 2 GB)
  
  (Two slots) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Expandable to 16 GB