HP HPE Alletra 2140 Hardware Manual page 78

1 Controller release lever (open)
2 Controller
Important:
To avoid electrostatic damage, place array components on a grounded anti-static mat. Use an ESD wrist strap
during removal and replacement.
3. Remove the PCIe cage from the controller.
For the primary cage (left), proceed to Step 4.
For the secondary cage (right), proceed to Step 5.
4. Remove the primary PCIe cage (left) from the controller.
a) Lift the tab of the fastener and turn the fastener one half turn (180°) counter clockwise to release the PCIe cage.
b) Grasp the PCIe cage with both hands and lift the cage out of the controller to unseat the underlying riser card from
its connector.
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3 Chassis
Maintenance Procedures 78