OWC 4GB PC8500 DDR3 1066MHz SO-DIMM Memory RAM Upgrade Compatible with Early 2009, Early 2010 MacBook, MacBook Pro Unibody Models, 2009/2010 Mac Mini, and 2009 iMac Models (OWC8566DDR3S4GB) at Amazon.com
OWC 4GB PC8500 DDR3 1066MHz SO-DIMM Memory RAM Upgrade Compatible with Early 2009, Early 2010 MacBook, MacBook Pro Unibody Models, 2009/2010 Mac Mini, and 2009 iMac Models (OWC8566DDR3S4GB) at Amazon.com