Dell Vostro 220 (Late 2008) - Manual (Page 53)

Bezel
53
Replacing the Bezel
1 With the computer still on its side, align and insert the bezel hooks into
the slots along one edge of the front of the computer.
2 Rotate the bezel toward the computer until the clips snap into place on
the opposite edge of the front of the computer
.
3 Perform the steps in the procedure "After Working on Your Computer" on
page 45.