iMac Intel 20" Early 2008 EMC 2210 - used original spareparts for Macs
iMac (Early 2008) RAM Upgrade - YouTube
Install memory in an iMac - Apple Support (PH)
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
Sold: 20-inch iMac Early-2008 // $425 | Denver Mac Repair
SOLVED: How can I upgrade my early 2008 24" iMac? - iMac Intel 24" EMC 2134 and 2211 - iFixit
32GB Memory Upgrade for Early 2008 Apple Mac Pro Tower
Maximum RAM iMac early 2008 | MacRumors Forums
8GB (4GBx2) Team High Performance Memory RAM Upgrade for iMac “Core 2 Duo” 2.66 20-Inch (Early 2008) MB324LL/A iMac 8,1. The Memory Kit Comes with Life Time Warranty. at Amazon.com
How to Upgrade/Install Memory in a 21.5-inch iMac (Late 2012– Mid 2014) iMac14,1 iMac14,3 - YouTube