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 at Amazon.com
OWC 2GB PC3-8500 DDR3 1066MHz SODIMM 204 Pin Memory Upgrade Module for Late 2008, Early 2009/2010 MacBook, MacBook Pro Unibody , Late 2009 MacBook, Mac mini, and 2009 iMac . model OWC8566DDR3S2GB System Specific Memory - Newegg.com
MacBook Pro: How to remove or install memory - Apple Support