4GB (2X2GB) NEMIX RAM Memory DDR2 800MHz PC2-6400 SODIMM 200 pin for Notebook Laptop Macbook DDR2 800MHz PC2-6400 100% Compatible with all Macbook Notebook Laptop Cas Latency 5 *** 1.8V *** NON-ECC *** 200 Pin 100% Compatible with PC Computers & Apple Mac Major Brand like Samsung Micron Hynix Kingston Elpida