A-Data Technology 4GB SO-DIMM 1066 MHz DDR3 SDRAM Memory (AD73I1C1674EV) for sale online | eBay
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