OWC 6GB (2GB + 4GB) PC8500 DDR3 1066MHz SO-DIMMs Memory Compatible with Late 2008, Early 2009, Early 2010 MacBook, MacBook Pro Unibody Models, 2009/2010 Mac Mini, 2009 iMac Models at Amazon.com
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KTH-PL313EK3/6G Kingston 6GB Kit (3 X 2GB) DDR3-1333MHz PC3-10600 ECC Unbuffered CL9 240-Pin DIMM Dual Rank Server Memory