Dell Dimension C521 - Manual (Page 10)

Installing Memory
1. Follow the procedures in Before You Begin .
2. Press out the securing clip at each end of the memory module connector.
3. Align the notch on the bottom of the module with the crossbar in the connector.
4. Insert the module into the connector until the module snaps into position.
If you insert the module correctly, the securing clips snap into the cutouts at each end of the module.
5. Replace the computer cover. See Replacing the Computer Cover .
6. Connect your computer and devices to electrical outlets, and then turn them on.
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 modules from Dell. If possible, do not pair an original memory module with a new memory module.
Otherwise, your computer may not start properly.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your
computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.
1 memory connector closer to edge of board 2 securing clips (2) 3 connector
1 cutouts (2) 2 memory module 3 notch
4 crossbar
NOTICE: To avoid damage to the memory module, press the module straight down into the connector while you apply equal force to each end of the
module.
NOTICE: To connect a network cable, first plug the cable into the network port or device, and then plug it into the computer.