Dell Precision 330 - Manual (Page 71)

Installing Upgrades 71
be aligned and the tabs on the front of the bracket should be flush
with the front of the drive (see the following figure).
A t t a c h i n g a D r i v e B r a c k e t t o t h e N e w D r i v e
To further ensure proper positioning of the drive in the chassis, insert
and tighten all four screws in the order in which the holes are numbered
(the holes are marked "1" through "4").
7 Slide the new drive/bracket assembly into the drive bay until both
drive bracket tabs snap securely into place (see the following figure).
drive bracket
bracket tabs (2)
screws (4)
drive