Dell Latitude D620 - Manual (Page 23)

5. Ground yourself and install the new memory module:
a. Align the notch in the module 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.
DIMM B
1. Follow the procedures in Before You Begin .
2. Turn the computer bottom-side up, loosen the captive screw in the memory module cover, and then remove the cover.
3. If you are replacing a memory module, ground yourself and remove the existing module:
a. Use your fingertips to carefully spread apart the securing clips on each end of the memory module connector until the module pops up.
b. Remove the module from the connector.
1 securing clips (2 per connector) 2 memory module
NOTE: If the memory module is not installed properly, the computer may not boot properly. No error message indicates this failure.
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." Insert memory modules at a 45-degree angle to avoid damaging the connector.
1 memory module cover 2 captive screw
NOTICE: To prevent damage to the memory module connector, do not use tools to spread the memory-module securing clips.