Dell Latitude D410 - Manual (Page 65)

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:
5. Align the notch in the module edge connector with the tab in the connector slot.
6. 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.
7. Replace the keyboard .
To add or replace a memory module in the DIMM B connector:
1. Turn the computer over, remove the screw from the memory module/coin-cell battery cover, and then remove the cover.
2. If you are replacing a memory module, 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 memory module
2 securing clips (2 per connector)
NOTE: If the memory module is not installed properly, the computer may not boot properly. No error message indicates this failure.
NOTICE: To prevent damage to the memory module connector, do not use tools to spread the memory-module securing clips.