Apple Memory Module 8GB 1066MHz DDR3 (PC3-8500) - 2x4GB SO-DIMMs at Amazon .com
Micron 4GB 2 x 2GB PC3-8500S DDR3 1066 Laptop Notebook Memory Kit Lenovo 55Y3713 at Amazon.com
2 x 4.0GB PC8500 DDR3 1066MHz 204 Pin - Walmart.com
Timetec 4GB Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 CL7 Dual Rank for Mac Book, Mac Book Pro, iMac, Mac Mini (Late 2008, Early/Mid/Late 2009, Mid 2010) SODIMM Memory MAC RAM
6.0GB 2GB+4GB MacBook 6,1 (Late 2009) Compatible Memory for DDR3 1066Mhz PC3 8500 SODIMM by NEMIX RAM at Amazon.com