I have the above spec iMac with Serial Number VM83066DZE7 running Software Mac OS X Lion 10.7.5 (11G63) and Memory 4 GB 800 MHz DDR2 SDRAM. Mactracker states that I can run 6Gb. On your site after selecting model and make it only gives me the option of 2Gb upgrade. how do I find the right 4Gb option for my system to add to one of my slots.
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