Dell OptiPlex GX1 Reference And Installation Manual page 127

screws (4)
1.6-inch drive
Insert the bracket's hinge tabs into the chassis slots so that the tabs hook over the
slots. Then rotate the bracket toward the drive cage, and fit the bracket's sliding tab
on the drive-cage slide rail. Slide the bracket into place. Reinstall the screw you
removed in step 4.
sliding tab
drive bracket
drive-cage
slide rail
chassis slots
hinge tabs
sliding tab
Installing Drives 7-13