Restored Apple MA876LL/A All-in-One iMac with Intel Core 2 Duo Processor, 4GB Memory, 20" Display, 250GB Hard Drive and Mac OS X 10.11 El Capitan (Refurbished) - Walmart.com
Timetec 16GB KIT(4x4GB) Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 CL7 Dual Rank for iMac (Late 2009 21.5-inch / 27-inch) SODIMM Memory MAC RAM Upgrade for iMac 10,1 and iMac 11,1 at Amazon.com