Acer Altos R520 M2 Series User Manual page 60

42
To install the air duct:
1 Perform the pre-installation instructions described on page 35.
2 Place the air duct on the chassis so that the tabs on the air duct
align with the slots on the chassis.
Caution! Do not pinch or unplug cables that may be near or
under the air duct.
3 Observe the post-installation instructions described on page 36.
3 System upgrade