This is your average business notebook, which shines with great upgradability.

1. Remove the bottom plate

To secure the bottom panel of this notebook, Dell is using 8 Phillips-head screws. After you undo them, they will stay attached to the plate. Then, you just need to pry the panel away with a plastic tool.
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https://laptopmedia.com/highlights/inside-dell-latitude-15-5510-disassembly-and-upgrade-options/