Acer Altos R720 Series - Manual (Page 56)

3 System upgrade 46
To remove the large air baffle:
1 Observe the ESD precautions and pre-installation instructions
described on page 35.
2 Note how the cables are routed over and under the air baffle. You
will need to re-route these cables later.
3 Disengage the air baffle and pull it out of the chassis.
To install the small air baffle:
1 Observe the ESD precautions and pre-installation instructions
described on page 35.
2 Engage the air baffle into its chassis slot.
3 Observe the post-installation instructions described on page 36.