Dell OptiPlex 3020M Owner's Manual page 17

1. Perform the following steps as shown in the illustration:
a. Remove the screws that secure the cover to the chassis [1].
b. Slide and lift the cover upwards to remove it from the chassis [2].
2. Perform the following steps as shown in the illustration:
a. Slide the computer into the slot [1].
b. Rotate the screw in clockwise direction to secure the computer to the chassis [2].
M3 X L8 mm, pitch 0.35 mm, machine
screw
E Plate with thread screw holes— Dell
E-series monitors
U Plate — Universal monitors
Installing the Accessories 17