Dell Dimension 2300 Owner's Manual page 75

Release and remove the front panel:
5
Push the release lever to release the top tab.
a
Reach inside the computer and push the bottom tab towards you
b
to release it (the middle tab releases automatically).
Rotate the front panel to separate it from the side hinges.
c
side hinges (3)
front panel
top tab
release lever
middle tab
bottom tab
75
Adding Pa rts