8GB G.Skill DDR3 1066MHz SO-DIMM Laptop Memory Kit 2x4GB for Apple Mac PC3- 8500 | eBay
OWC ram 4GB 204-Pin SODIMM PC3-8500 DDR3 1066MHz memory module for Mac 794504325850 | eBay
Komputerbay 8GB (2x 4GB) DDR3 SODIMM (204 pin) made with Hynix semiconductors 1066Mhz PC3 8500 for Apple 8 GB with SODIMM Heatsink for extra cooling - Komputer Bay