NetApp ASA C Series Install page 263

You install the PCIe risers in the replacement controller module after moving the DIMMs, NVDIMMs, and
boot media.
1. Install the riser into the replacement controller module:
a. Align the lip of the riser with the underside of the controller module sheet metal.
b. Guide the riser along the pins in the controller module, and then lower the riser into the controller
module.
c. Swing the locking latch down and click it into the locked position.
When locked, the locking latch is flush with the top of the riser and the riser sits squarely in the
controller module.
d. Reinsert any SFP or QSFP modules that were removed from the PCIe cards.
2. Repeat the preceding step for the remaining PCIe risers.
== Step 10: Install the controller module
After all of the components have been moved from the impaired controller module to the replacement
controller module, you must install the replacement controller module into the chassis and then boot it to
Maintenance mode.
1. If you have not already done so, close the air duct:
a. Swing the air duct all the way down to the controller module.
b. Slide the air duct toward the risers until the locking tabs click into place.
c. Inspect the air duct to make sure that it is properly seated and locked into place.
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