HPE Nimble Storage HF Series Hardware Manual page 129

c) Twist the card holder into place ensuring the rubber tabs engage all PCIe cards properly.
1 Rubber tabs
d) Continue to slide the card holder into the PCIe cage until it locks into place.
11. Return the PCIe cage into the upgrade controller.
a) Lower the PCIe cage back into the controller, making sure that the PCIe cage aligns with the guide pins, and that the
riser card with the bridge board connector aligns with the bridge board. Press down on the top of the PCIe cage ensuring
that both riser cards and the bridge board connector are properly seated. Then replace the controller shroud. Tighten
the bottom thumbscrew on the PCIe cage after it is in place.
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Upgrade Procedures 129