Dell Dimension H7228 Owner's Manual

Also see for Dimension 4600C: Quick setup guide Service manual

Contents

Adding Parts 69The recommended memory configurations are:• Install a pair of matched memory modules in connectors DDR_A0 and DDR_B0• Do not install ECC memory modules.• Be sure to install a single memory module in DDR_A0 or the connector closest to theprocessor before you install modules in the other connectors.NOTICE: If you remove your original memory modules from the computer during a memory upgrade,keep them separate from any new modules that you may have, even if you purchased the new modulesfrom Dell. You should install your original memory modules in pairs in connectors DDR_A0 and DDR_B0.If possible, do not pair an original memory module with a new memory module. Otherwise, your computermay not function at optimal performance.NOTE: Memory purchased from Dell is covered under your computer warranty.Installing MemoryCAUTION: Before you begin any of the procedures in this section, follow the safety instructionslocated in the Product Information Guide.1 Shut down the computer through the Start menu (see page 21).2 Ensure that your computer and attached devices are turned off. If your computer andattached devices did not automatically turn off when you shut down your computer, turnthem off now.NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug itfrom the network wall jack.3 Disconnect any telephone or telecommunication lines from the computer.4 Disconnect your computer and all attached devices from their electrical outlets, and thenpress the power button to ground the system board.5 Remove the computer stand (see page 12).CAUTION: To guard against electrical shock, always unplug your computer from the electrical outletbefore opening the cover.6 Open the computer cover (see page 58).