How to replace HDD/SSD in iMac 2006 | Mac Cheat Sheet
iMac (Late 2006) RAM upgrade - YouTube
Install memory in an iMac - Apple Support
apple-history.com / iMac (Late 2006)
Retro Review: iMac Core 2 Duo (Late 2006), 15 Years Later! Still Usable?! - YouTube
Upgrade your iMac's RAM in less than 5 minutes - YouTube
A-Tech for Apple 4GB Kit 2X 2GB PC2-5300 667MHz Mac Mini iMac Late 2006 Late 2008 Mid 2007 A1208 MA589LL A1207 MA456LL A1200 MB138LL/A A1176 MB139LL/A Memory RAM at Amazon.com