how to Install from 2gb to 6gb gig Ram in 2008 Imac MAC 2.4 Ghz core Duo 2 Intel chip upgrade memory - YouTube
iMac Early 2008: I finally sold my very first iMac. Is it still useful in 2020? - YouTube
Install memory in an iMac - Apple Support
CMS 4GB (1X4GB) DDR2 6400 800MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Core 2 Duo 2.4 20-Inch Early 2008 - A42 at Amazon.com
PC2-6400 2 GB RAM Chip
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
SOLVED: How can I upgrade my early 2008 24" iMac? - iMac Intel 24" EMC 2134 and 2211 - iFixit
iMac Intel 20" Early 2008 EMC 2210 - used original spareparts for Macs
Memory Upgrades for Apple iMac 2011 Up to 32GB
CMS 6GB (1X4GB) & (1X2GB) DDR2 6400 800MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Core 2 Duo 2.4 20-Inch Early 2008 - B117 at Amazon.com
Memory RAM 1x 2GB Apple - iMac 20'' Early 2008 DDR2 800MHz SO-DIMM | MB412G/A ESUS IT
iMac (Early 2008) RAM Upgrade - YouTube
How to Upgrade iMac RAM (20" and 24" Aluminum): EveryMac.com
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
iMac Early 2008 20" Upgrade Kit - Real Mac Mods
iMac (2007-2009) Memory Installation Video - YouTube