Back to Contents PageRemoving and Installing PartsDell™ Dimension™ XPS Service ManualMemoryYou can increase your computer memory by installing memory modules on the system board.Your computer supports DDR2 memory. For additional information on the type of memory supported by your computer, see the technical specifications formemory.DDR2 Memory Overviewl DDR2 memory modules should be installed in pairs of matched memory size and speed. If the DDR2 memory modules are not installed in matched pairs,the computer will continue to operate, but with a slight reduction in performance. See the label in the upper-right corner of the module to determine themodule's capacity.The recommended memory configurations are:¡ A pair of matched memory modules installed in DIMM connectors 1 and 2or¡ A pair of matched memory modules installed in DIMM connectors 1 and 2 and another matched pair installed in DIMM connectors 3 and 4l If you install mixed pairs of PC2-4200 (DDR2 533-MHz) and PC2-5300 (DDR2 667-MHz) memory, the modules function at the speed of the slowestmodule installed.l Be sure to install a single memory module in DIMM connector 1, the connector closest to the processor, before you install modules in the otherconnectors.MemoryCardsDrivesHard DriveFloppy DriveMedia Card Reader (Optional)CD/DVD DriveProcessor Airflow ShroudProcessorSystem BoardPower SupplyFront PanelFront LED BoardDrive DoorBatteryNOTE: The module's capacity label can also be seen in the upper-left corner of the module.NOTE: Always install DDR2 memory modules in the order indicated on the system board.NOTICE: Do not install ECC memory modules.