A-Tech for Apple 1GB DDR2 667MHz PC2-5300 200-pin SODIMM for MacBook, MacBook Pro, iMac, Mac Mini - (Early/Mid/Late 2006, Mid/Late 2007, Early 2008, Early 2009) - Memory RAM Module at Amazon.com
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Memory Upgrades for Apple iMac 2007 - Up to 6GB
Apple iMac A1224 2007 Core 2 Duo T7700@2.4GHz 20" 2GB RAM 320GB BOOTS El Capitan | eBay