HP Netserver L Server series - Manual (Page 57)

Chapter 6 Installing an Additional Processor
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CAUTION Ensure you align pin-1 of the processor with pin-1 of the
processor socket or pin damage will occur.
11. Insert the second processor into the socket and close the ZIF lever to fully seat
the processor.
You should hear the ZIF lever click when it closes properly.
Pin-1
Marker
Figure 6-4. Installing the Processor on the System Board