NetApp AFF A200 System Documentation page 522

6. Slide the controller module out of the chassis.
Make sure that you support the bottom of the controller module as you slide it out of the chassis.
7. Place the controller module on a stable, flat surface.
8. On the replacement controller module, open the air duct and remove the empty risers from the controller
module using the animation, illustration, or the written steps:
Removing the empty risers from the replacement controller module
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