4GB DDR3 8500 PC3-1066MHz, Royemai 2Rx8 1067MHz SODIMM RAM Memory for Laptop Notebook MacBook Late 2008, Early/Mid/Late 2009, Mid 2010, MacBook Pro, iMac, Mac Mini at Amazon.com
MicroMemory 4 GB DDR3 1066 MHz SO-DIMM Laptop Memory (DDR3, 0 – 85 °C at Amazon.com
Kingston Technology 4 GB Memory for Select Apple Imac's and Macbooks Single (Not a kit) 1066 MHz (PC3 8500) 204-Pin DDR3 SO-DIMM KTA- MB1066/4G at Amazon.com
URAM 4GB DDR3 SDRAM PC3-8500 1.5V SODIMM Samsung IC RAM(Laptop Memory) at Amazon.com
URAM Laptop Memory 4GB DDR3 1066MHz 1067MHz PC3-8500S Samsung IC RAM SODIMM or Apple Mc, Intel,and AMD Systems 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
G.Skill F3-8500CL7S-4GBSQ 4GB (1x4GB) DDR3-1066Mhz PC38500 SODIMM RAM at Amazon.com
Kuesuny 8GB kit (2x4GB) DDR3 1066MHz/1067MHz PC3-8500 SODIMM RAM Upgrade for Late 2008, Early/Mid/Late 2009, Mid 2010 MacBook, MacBook Pro, iMac, Mac Mini at Amazon.com
4GB (2x2GB) DDR3-1066MHZ PC3-8500 2Rx8 SODIMM Laptop Memory by NEMIX RAM at Amazon.com