iMac (2007-2009) Memory Installation Video - YouTube
iMac (2009) RAM & Storage Upgrades
how to upgrade iMac early 2009 SSD and RAM - full class - YouTube
8GB Kit (4GBX2) DDR3-1067Mhz for Early/Late 2009 iMac and 2009-2010 MacBook Pro at Amazon.com
Timetec 8GB KIT(2x4GB) Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 CL7 for Mac Book, Mac Book Pro, iMac, Mac Mini (Late 2008, Early/Mid/Late 2009, Mid 2010) SODIMM Memory MAC RAM Upgrade
iMac (2007-2009) Memory Installation Video - YouTube
Apple iMac 9,1 24" Core 2 Duo@2.93GHz CPU 4GB RAM 640GB HDD Mac OS El Capitan | eBay
How to Upgrade iMac RAM (20" and 24" Aluminum): EveryMac.com