4GB DDR2 SODIMM Komputerbay (200 pin) 667Mhz PC2-5400 / PC2-5300 CL 5.0 NON-ECC Unbuffered 1.8v memory DDR2-667 Module (Accessory)
Impec! This bar 4GB is well recognized by my old macbook pro 2.GHz mid 2007. So I can confirm that it supports 6GB of RAM instead of the official 4 max.
