Dell OptiPlex SX280 - Manual (Page 56)

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.
6. Connect your computer and devices to electrical outlets, and turn them on.
After you open and close the cover, the chassis intrusion detector, if enabled, causes the following message to appear on the screen at the next
computer start-up:
ALERT! Cover was previously removed.
7. Reset the chassis intrusion detector by changing Chassis Intrusion to On or On-Silent.
8. The computer detects that the new memory does not match the existing configuration information and generates the following message:
The amount of system memory has changed.
Strike the F1 key to continue, F2 to run the setup utility
1 cutouts (2) 4 notch
2 connector 5 securing clips (2)
3 memory module 6 memory connectors on system board
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 wall jack and then plug it into the computer.
NOTE: If an admin password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion
detector.