RAM Type: PC3-10600 DDR3 Min. RAM Speed: 1333 MHz
Details: Supports 1333 MHz PC3-10600 DDR3 SDRAM.
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 third-parties have determined that this model actually is capable of using up to 16 GB of RAM with two 8 GB memory modules.