Dell MTC2 User Manual page 88

Release and remove the front panel:
6
a
b
c
88
Re m ov i n g a n d I ns t al l i n g Pa r t s
Push the release lever to release the top tab.
Reach inside the computer and push the bottom tab towards you to release it (the
middle tab releases automatically).
Rotate the front panel to separate it from the side hinges.
side hinges (3)
front panel
top tab
release lever
middle tab
bottom tab