The product is a set of two Samsung DDR3 memory modules with a total capacity of 4GB. Each module has a capacity of 2GB and they are designed in the SO-DIMM form factor. The modules have a bus speed of 1333mhz and are compatible with iMac 2009 and MacBook Unibody computers. Made in China, this memory upgrade is ideal for increasing the performance and efficiency of your computer system.
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