NEC Express5800/R320g-M4 Maintenance Manual page 159

Chapter 2 Configuring and Upgrading the System
5. Installing Optional Devices
6. Lower the lock on the side of CPU/IO module to unlock it, and then pull out the module.
7. Pull out the CPU/IO module gently and carefully, and place it on a flat and sturdy table.
Avoid the dusty or humid place.
The preparation of removing/replacing an optional device is now complete.
Express5800/R310g-E4, R320g-E4, R320g-M4 Maintenance Guide (Windows)
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