NEC Express5800 Series Maintenance Manual page 126

Chapter 2 Configuring and Upgrading the System
12. Place the top cover of the CPU/IO module and secure it with three screws.
13. Refer to Chapter 2 (5.4.2 Installing CPU/IO Module) and install the CPU/IO module.
14. Connect the power cords.
15. Press the POWER switch to power on the server.
16. Verify that POST displays no error message.
If POST displays an error message, write it down and see the POST error message list in Chapter 1
(6.2 POST Error Message).
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Express5800/R320c-E4, R320c-M4 Maintenance Guide (VMware)
5. Installing Optional Devices