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
DUOMEIQI 8GB Kit (2 X 4GB) 2RX8 PC3-8500 PC3-8500S DDR3 RAM 8GB 1066MHz SODIMM CL7 204 Pin 1.5v Non-ECC Unbuffered Notebook Memory Laptop RAM Modules Compatible with All Computer System at Amazon.com
OWC 4GB PC8500 DDR3 1066MHz SO-DIMM Memory Compatible with Early 2009, Early 2010 MacBook, MacBook Pro Unibody Models, 2009/2010 Mac Mini, and 2009 iMac Models at Amazon.com