Elpida 2GB 204-Pin PC3-8500S DDR3 Sdram at Amazon.com
4GB Kit (2 X 2GB) DDR3-1066 (PC3-8500) RAM Memory Upgrade for Apple MacBook Pro 13"/15"/17" Mac Mini Core 2 Duo 2.0/2.26/2.53ghz; MacBook 13in Equivalent to Kta-mb1066k2/4g (Genuine A-tech Brand) at Amazon.com