MemoryMasters 4GB (1x4GB) DDR2-800MHz PC2-6400 2Rx8 1.8V SODIMM Memory for Laptop, Notebook at Amazon.com
MemoryMasters 4GB 800MHz DDR2 (PC2-6400) - 2x2GB SO-DIMMs for Apple iMac Intel Core 2 Duo Early 2008 20 inch 24 inch and White MacBook Mid 2009 13 inch at Amazon.com
URAM DDR2 4GB(Single) 800MHz PC2-6400 PC2-6300 SODIMM Hynix IC Laptop RAM at Amazon.com