4 Upgrading your computer60Upgrading your computerCertain components of your computer are upgradeable, such as the memory,the hard disk, the CPU and the expansion cards. You need to observe the"Installation precautions" on page 53 when installing or removing a computercomponent. However, for safety purposes, we do not recommend that youperform these upgrades yourself. If you want to replace or upgrade any ofthese components, contact your dealer or a qualified service technicianfor assistance.Note: The mainboard model shown in the following figures maynot be exactly the same as the one found in your computer.Installing additional memoryThe four 240-pin sockets on the mainboard support Double Data Rate 2 (DDR2)Synchronous Dynamic Random Access Memory (SDRAM)-type DIMMs. You mayinstall 128 MB, 256 MB, 512 MB or 1 GB DIMMs for a maximum memory capacityof 4 GB. (see note)The DDR2 DIMMs require 1.8 volts. You can install PC2 3200/DDR2 400, or PC24200/DDR2 533 modules in the DDR2 DIMM sockets. Contact your dealer forqualified DIMM vendors.Each DDR2 DIMM socket is independent from the other. This independenceallows you to install DDR2 DIMMs with different capacities to formdifferent configurations.Note: DDR2 667/800, 4 DIMM slots, expandable to 4 GB dual-channel memoryTo remove a DDR2 DIMMNote: The DDR2 DIMM has only one notch located toward thecenter of the module.1 Remove the side panel.2 Locate the DDR2 DIMM socket on the mainboard.
