Super Talent DDR3 1066 SODIMM 4 GB Micron Chip Notebook Memory W1066SB4GM at Amazon.com
Crucial Micron 4GB 2 x 2GB PC3-10600S DDR3 1066 SODIMM CL7 Laptop Memory Kit at Amazon.com
A-Tech 4GB Kit (2 X 2GB) DDR3-1066 (PC3-8500) RAM Memory Upgrade for Apple MacBook Pro 13"/15"/17" Mac Mini Core 2 Duo 2.0/2.26/2.53ghz; MacBook 13in Equivalent to Kta-mb1066k2/4g (Genuine Brand) at Amazon.com
Amazon.com: OWC 2GB PC8500 DDR3 1066MHz SO-DIMM Memory Compatible with Late 2008, Early 2009, Early 2010 MacBook, MacBook Pro Unibody Models, Late 2009 MacBook, 2009/2010 Mac Mini, & 2009 iMac : Everything Else