4 Upgrading your computer60Upgrading 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, wedo not recommend that you perform these upgrades yourself. If youwant to replace or upgrade any of these components, contact yourdealer or a 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 two 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 2 GB.Note: To capitalize on the system memory capacity mentionedabove, you must use 1-GB memory modules which are not yetavailable in the market. The biggest capacity currently available is512-MB which allows a maximum of 1GB.The DDR DIMMs should work under 2.5 volts. You can install PC2100/DDR266 DDR modules on the DDR DIMM sockets. Contact your dealerfor 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 centerof the module.1. Remove the computer cover (see page 51).