Dell 23.8" OptiPlex 7410 All-in-One Desktop Computer (Gray) - Manual (Page 43)

Steps
1. Using the tab on the DIMM door, pry open and lift the DIMM door on the system-board shield to access the memory slots.
2. Using your fingertips, carefully spread apart the securing clips on each end of the memory-module slot until the memory
module pops out.
3. Remove the memory module from the memory-module slot.
NOTE: Repeat steps 2 to 3 for each memory module installed on your computer.
Installing the memory
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the memory and provides a visual representation of the installation procedure.
Removing and installing Customer Replaceable Units (CRUs) 43