Silicon Graphics Virtu VN200 Hardware User's Manual page 96

System Procedures
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8. Use your thumb to gently push the load lever down until it snaps into the retention
clasp.
Load lever
9. If the CPU is properly installed into the socket, the PnP cap is automatically released
from the load plate when the lever locks.
Caution: Retain the plastic PnP cap for shipping. The node board must be shipped
with the PnP cap properly installed to protect the CPU socket. Shipment without the
PnP cap properly installed may void the warranty.
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