4GB RAM Memory for Apple Mac Pro 2.66GHz Quad-Core Xeon (MB871LL/A) 240pin PC3-8500 DDR3 UDIMM 1066MHz Black Diamond Memory Module Upgrade - Walmart.com
Kingston Technology 4 GB Memory for Select Apple Imac's and Macbooks Single (Not a kit) 1066 MHz (PC3 8500) 204-Pin DDR3 SO-DIMM KTA- MB1066/4G at Amazon.com
A-Tech 4GB PC3-8500 DDR3 1066/1067 MHz RAM for MacBook, MacBook Pro, iMac, Mac Mini (Late 2008, Early/Mid/Late 2009, Mid 2010) | 204-Pin SODIMM Memory Upgrade Module at Amazon.com
NEMIX RAM 4GB (1X4GB) DDR3 1066MHZ PC3-8500 MacBook Pro (Late 2006 - Late 2008) Pre-unibody iMac (Early & Mid 2009) iMac (Late 2009) MacBook Pro (Late 2008 - 2010) Compatible Memory at Amazon.com
OWC 8 GB (2 X 4GB) ram PC8500 DDR3 1066MHz sodimm 204-pin Memory Upgrade Kit, (OWC8566DDR3S8GP), Compatible with MacBook Pro, MacBook, Mac Mini and iMac at Amazon.com