Allied Telesis AT-2911 Series Adapters - Manual (Page 36)

Chapter 2: Installing the Hardware
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4. Remove the faceplate that is directly in line with the PCIe slot you
selected. See Figure 12.
Keep the faceplate in a safe place. You may need it for future use.
Figure 12. Removing the Faceplate From PCIe Slot
Note
If you cannot locate or know how to find an appropriate PCIe slot,
refer to the documentation that came with your system.
5. Remove the network adapter card from the shipping package and
store the packaging material in a safe location.
Caution
Wear a grounding device and observe electrostatic discharge
precautions when installing the network adapter card in a system.
Failure to observe this caution could result in damage to the adapter
card.