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A-Tech for Apple 6GB Kit (1x2GB + 1x4GB) DDR2 667MHz PC2-5300 200-pin SODIMM for MacBook (Late 2007, Early 2008, Early 2009), MacBook Pro (Mid 2007, Early 2008), iMac (Mid 2007) - Memory RAM Upgrade at Amazon.com
Apple iMac 20-inch Mid 2007 Core 2 Duo Processor 2.4 GHz 250GB HDD 3GB RAM | eBay
Apple iMac 24-inch Mid 2007 2.4GHz Intel Core 2 Duo (MA878LL) – UNICOM, Inc.
Apple A1225 24-inch iMac 7.1 Core 2 Duo 2.4GHz 320GB HD 2GB RAM Mid-2007 MA878LL | RecycledGoods.com
4GB 2 X 2GB DDR2 Memory for iMac 7,1 Mid 2007 20" inch 24" inch Intel Core 2 Duo 2.4GHz PC2-5300 667MHz 200 pin SODIMM (PARTS-QUICK) at Amazon.com
iMAC 20" mid 2007 w el Capitain, 6GB Ram, 320GB HDD /READY TO GO../good working! | eBay