Dell OptiPlex 7460 - Base Cover and Power Supply Unit (PSU)

a Heat sink
b System board shield
c Back cover
d Stand
5 Follow the procedure in After working inside your computer.
Base cover
Removing the base cover
1 Follow the procedure in Before working inside your computer.
2 Remove the following components:
a Stand
b Cable cover (optional)
c Back cover
d System board shield
3 Remove the four screws (M3) that secure the base cover to the display assembly base.
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Removing and Installing components