Axiom 8GB DDR3-1066 ECC RDIMM for HP500664-B218GB (1 x 8GB)1066MHz DDR3-1066/PC3-8500ECCDDR3 SDRAM 500664-B21-AX - Corporate Armor
Samsung 2 GB SO-DIMM 1066 MHz DDR3 SDRAM Memory (M471B5673EH1-CF8) 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
Kingston Technology 4 GB DIMM Memory 1066 MHz (PC3-8500) 240-Pin DDR3 SDRAM Single (Not a kit) KTD-XPS730A/4G at Amazon.com