Dell DIMENSION 3000 SYSTEMS DMC Owner's Manual page 67

NOTICE:
Ground yourself by touching an unpainted metal surface on the back of the computer.
NOTICE:
When you unpack the drive, do not set it on a hard surface, which may damage the drive.
Instead, set the drive on a soft surface, such as a foam pad, that will sufficiently cushion it.
7
Install the additional hard drive:
Place the two bracket tabs into the drive slots inside the computer's front panel.
a
Swing the bracket forward so that it is flush with the computer's front panel.
b
Replace the bracket-securing screws.
c
drive slots (2)
bracket tabs (2)
front computer frame
bracket-securing
screw
drive bracket
bracket-securing
screw
Removing and Installing Parts
67