Dell Dimension 2400 Series Owner's Manual page 61

tabs (2)
8
Ensure that the jumper setting on the new drive is set for "cable select" (see the
documentation that came with the drive for information).
9
Remove two extra alignment screws, shown in the illustration on page 62, from the front of
the computer and insert them into the drive.
NOTE:
Some computers come with only two extra alignment screws; others come with four. You only
need two alignment screws for this procedure.
drive
alignment screws (2)
insert
Removing and Installing Parts
61