Sony PCV-RX590G Handbuch

Your computer may not have available memory slots. The preinstalled memory configuration may vary, depending on the
computer you purchased. See the Specifications sheet for information about the memory installed in your computer. For
memory upgrades, use only PC-800 RDRAM RIMM   modules in pairs. 

 

You can purchase additional memory modules, accessories, and peripheral equipment from your local retailer.