4GB kit (2GBx2) Upgrade for a Apple iMac (Mid 2007) System | eBay
Apple iMac Ram Upgrade - 4GB to 8GB - YouTube
Mid 2007 iMac Upgrade. MAX Specs,SSD,And Catalina! - YouTube
4GB NEMIX RAM Memory for Apple Module iMac 2007 - Newegg.com
Memory RAM Upgrade for Apple iMac 20-inch Mid 2007 2GB DDR2 SODIMM | eBay
Memory Upgrades for Apple iMac 2007 - Up to 6GB
Install memory in an iMac - Apple Support
Memory Upgrades for Apple iMac 2007 - Up to 6GB
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
install memory in iMac - mid 2007 model - YouTube
OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com
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
Install memory in an iMac - Apple Support
How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com