NEC N8100-1417F User Manual page 341

6.
Install the CPU duct cover.
Removal (Water Cooling Heat Sink)
Remove the water cooling heat sink from the CPU in the reverse procedure of the
installation.
IMPORTANT:
heat sink, you must update the system.
Use the "Update CD-ROM" provided with N8101-402 water-cooling
heat sink to update the system.
Updating system is required in the following cases:
When the standard heat sink is replaced with water-cooling heat
sink
When the water-cooling heat sink is replaced with standard heat
sink
If you have installed or removed the water-cooling
Upgrading Your Server 9-83