NEC Express5800/T120h User Manual page 64

Chapter 2 Preparations
6. Align the socket alignment pins with the module on the top of the motherboard, press gently down so it
contacts with the motherboard evenly.
The socket alignment pin is a key, so the processor can be installed in only one direction.
Tighten the heat sink screws (4 PCs) with a T-30 hexalobular driver in the following order (1 → 2 → 3 →
7.
4) to secure.
8. Make sure that the heat sink is installed on a level with the motherboard.
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Note If the heat sink is not level, remove it, and then install it again.The following

probably causes the heat sink not to be level:
－The CPU is not positioned correctly.
－All screws are not completely tightened.
Do not move the secured heat sink.

Express5800/T120h User's Guide
1. Installing Internal Optional Devices