NEC Express5800 User Manual page 372

9-34 Upgrading Your Server
Installation
1.
See the section "Preparing for Installation and Removal" described earlier to prepare.
2.
Remove the side cover.
3.
Remove the CPU duct cover.
4.
Insert the optional fan unit into the slot for additional front fan.
Insert the groove of the optional fan unit along with the guide of the factory-installed front
fan, and push it to the end.
5.
Remove the fan box from the slot for additional rear fan.
Remove the stopper, then slowly lift the fan box to remove it.
Optional fan unit
Factory-installed front fan
Fan box