NEC N8800-155F User Manual page 5

Mandatory actions
Unplug the server. There is a risk of an electric shock or fire.
Indicates a general action to take that is not defined herein. Make sure to follow the
instructions.
Be sure to provide earthing. Otherwise, an electric shock or fire may be caused.
For detailed notes to set up the machine safely, refer to "NOTES FOR SAFE HANDLING"
on page 1-2.