Dell DIMENSION E510 DCSM Owner's Manual page 71

4 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.
5 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.
memory connector closest to processor
connector
notch
memory module
cutouts (2)
securing clips (2)
crossbar
Removing and Installing Parts
71