Late 2011 - MacBookPro8,1
Compatible upgrades for: MD313LL/A, MD314LL/A - Late 2011 Macbook Pro's.
Standard RAM: 4 GB
Maximum RAM: 16 GB*
Details: 4 GB of RAM is installed as two 2 GB modules, no slots free.
*Apple officially supports a maximum of 8 GB of RAM, but this model actually is capable of using up to 16 GB of RAM with two 8 GB memory modules.
RAM Slots: 2