59Upgrading your computerCertain components of your computer are upgradeable such as thememory, the hard disk, the CPU and the expansion cards. You need toobserve the “Installation precautions” on page 49 when installing orremoving a computer component. However, for safety purposes, we donot recommend that you perform these upgrades yourself. If you wantto replace or upgrade any of these components, contact your dealer ora qualified service technician for assistance.Note: The mainboard model shown in the following figures maynot be exactly the same with the one found in your computer.Installing additional memoryThe four 184-pin sockets on the mainboard support Double Data Rate(DDR) Synchronous Dynamic Random Access Memory (SDRAM)-typeDIMMs. You may install 128-MB, 256-MB, 512-MB or 1-GB DIMMs for amaximum memory capacity of 4 GB.The DDR DIMMs should work under 2.5 volts. You can install PC2100/DDR266, PC2700/DDR333, or PC3200/DDR400 modules in the DDRDIMM sockets. Contact your dealer for qualified DIMM vendors.Each DDR DIMM socket is independent from the other. Thisindependence allows you to install DDR DIMMs with differentcapacities to form different configurations.To remove a DDR DIMMNote: The DDR DIMM has only one notch located on the center ofthe module.1 Remove the side panel (see page 51).2 Locate the DDR DIMM socket on the mainboard.
