Dell Latitude D620 - Manual (Page 57)

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.
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 cover.
6. Insert the battery into the battery bay, or connect the AC adapter to your computer and an electrical outlet.
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.
1 securing clips (2 per connector) 2 memory module
NOTICE: Insert memory modules at a 45-degree angle to avoid damaging the connector.
NOTE: If the memory module is not installed properly, the computer may not boot properly. No error message indicates this failure.
NOTICE: If the cover is difficult to close, remove the module and reinstall it. Forcing the cover to close may damage your computer.