Dell Dimension C521 - Manual (Page 67)

Removing and Installing Parts
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3 Align the notch on the bottom of the module with the crossbar in the connector.
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.
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" on page 90).
NOTICE:
To connect a network cable, first plug the cable into the network port or device, and then plug it into the
computer.
6 Connect your computer and devices to electrical outlets, and then turn them on.
7 When a message appears stating that memory size has changed, press <F1> to continue.
8 Log on to your computer.
9 Right-click the My Computer icon, then click Properties.
10 Click the General tab.
11 To verify that the memory is installed correctly, check the amount of memory (RAM) listed.
1 cutouts (2) 2 memory module 3 notch
4 crossbar
3
2
1
4