The best memory upgrades for your Toshiba Portege 4000 Notebook!
We've spent years amassing all the information we need to make sure you get the right memory for your Toshiba Portege 4000 Notebook.
We guarantee this memory will work in your machine for the life of your machine. Your Toshiba Portege 4000 supports up to 1 GB in two slots and modules must be installed one at a time.