Dell Latitude D531 (Mid 2007) - Manual (Page 120)

120 Before You Begin
NOTICE: If you need to install memory modules in two connectors, install a memory module in the connector
labeled “DIMMA” before you install a module in the connector labeled “DIMMB.”
NOTICE: Insert memory modules at a 45-degree angle to avoid damaging the connector. If the memory module is
not installed properly, the computer may not boot properly. No error message indicates this failure.
NOTE: For optimal performance, identical memory modules should be used in each connector.
4 Ground yourself and install the new memory module:
a Align the notch in the module edge connector with the tab in the connector slot.
b Slide the module firmly into the slot at a 45-degree angle, and rotate the module down until it
clicks into place. If you do not feel the click, remove the module and reinstall it.
5 Replace the memory module cover.
NOTICE: If the cover is difficult to close, remove the module and reinstall it. Forcing the cover to close may
damage your computer.
6 Insert the battery into the battery bay, or connect the AC adapter to your computer and an electrical
outlet.
7 Turn on the computer.
As the computer boots, it detects the additional memory and automatically updates the system
configuration information.
To confirm the amount of memory installed in the computer:
1 memory module 2 securing clips (2)
1
2