The best memory upgrades for your Compaq Pavilion Desktop Series Other 4509 Desktop!
We've spent years amassing all the information we need to make sure you get the right memory for your Compaq Pavilion Desktop Series Other 4509 Desktop.
We guarantee this memory will work in your machine for the life of your machine. Your Compaq Pavilion Desktop Series Other 4509 supports up to 384 MB in three slots and modules must be installed one at a time.