Dell Inspiron 8500 - Manual (Page 125)

Adding and Replacing Parts 125
7 Turn the computer over, loosen the captive screw from the memory
module cover, and then remove the cover.
NOTICE: To prevent damage to the memory module connector, do not use
tools to spread the memory-module securing clips.
8 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.
captive screw memory module cover