User's Guide

1. Installing Internal Optional Devices
Express5800/R120f-2M User’s Guide
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Chapter 2 Preparations
6. Push down the socket lever marked with "← " once to unlatch it from the hook, then slowly open
the lever until it stops.
7. Lift the plate.
Important
Do not touch the socket contacts.
8. Put the additional CPU on the CPU socket slowly and gently.
For easy installation, hold edges of CPU with your thumb and index fingers so that the notch is
aligned with the key on the CPU socket.
Important
• Be sure to hold the CPU only at the edges.
• Pay attention not to touch the bottom of the CPU (pin section).
Note
• Insert the CPU while aligning the notch on the CPU with the key on the CPU
socket.
• Bring down the CPU straight without tilting or sliding it in the socket.