Details: 2 GB of RAM is installed as two 1 GB modules, no slots free.
*Apple officially supports a maximum of 4 GB of RAM, but third-parties have confirmed that it actually supports 8 GB of RAM.
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* A Mac will utilise interleaving if both sticks are the same but they can be any mixture of 1,2 or 4
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* UPDATE 10/1/19
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* The above is still true for the 2.26 but the 2.4 now supports 16GB
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* On the 2.4 *Apple officially supports a maximum of 4 GB of RAM, but third-parties have determined that it actually supports 8 GB of RAM running Mac OS X 10.6 "Snow Leopard" and 16 GB of RAM running OS X 10.7.5 "Lion" or higher and the latest EFI update.
PC3-8500 DDR3 Min. RAM Speed: 1066 MHz
Details: Supports 1066 MHz PC3-8500 DDR3 SDRAM.
Standard RAM: 2 GB Maximum RAM: 8 GB*
Details: 2 GB of RAM is installed as two 1 GB modules, no slots free.
*Apple officially supports a maximum of 4 GB of RAM, but third-parties have confirmed that it actually supports 8 GB of RAM.