Kingston 2 GB DDR2 SDRAM Memory Module 2 GB (1 x 2 GB) 667MHz DDR2 SDRAM 200pin KTD-INSP6000B/2G at Amazon.com
URAM Laptop Memory 2GB 667MHz PC2-5300 PC2-5400 DDR2 SDRAM SODIMM RAM Stick for Mac, Intel, & AMD Systems, blue at Amazon.com
Amazon.com: OWC 2GB PC5300 DDR2 667MHz SO-DIMM Memory Compatible with MacBook, MacBook Pro, iMac, and Mac Mini Models with Core 2 Duo Processor (OWC5300DDR2S2GB) : Everything Else
Kingston ValueRAM 2GB DDR2 667MHz FBDIMM Desktop Server Memory at Amazon.com
URAM DDR2 SDRAM 2GB 667MHz PC2 5300S PC2 5300 1.8V 200 pin Non-ECC SODIMM Samsung Chip Laptop Memory RAM for Notebooks with Intel and AMD Systems, and for iMac,MacBook,MacBook Pro and Mac
Crucial 2GB Single DDR2 667MHz (PC2-5300) CL5 SODIMM 200-Pin Notebook Memory Module CT25664AC667 at Amazon.com