PLEASE NOTE:
Maximum Memory: 3 GB with Windows Vista 32-bit
8 GB with Windows Vista 64-bit
Expansion: 2 Sockets
Notebooks with 32-bit operating systems, if 4GB is installed, the
recognized memory may be reduced to 3.0 or 3.5GB or less (depending on
system configuration and memory allocation).
Notebooks with 64-bit operating systems, can recognize the full 4GB.