NEC N8100-1573F User Manual page 21

Notes on Using Your Server 1-5
CAUTION
Keep water or foreign matter away from the server.
Do not let any form of liquid (water etc.) or foreign matter (e.g., pins or paper
clips) enter the server. Failure to follow this warning may cause an electric
shock, a fire, or a failure of the server. When such things accidentally enter
the server, immediately turn off the power and disconnect the power plug
from the outlet. Do not disassemble the server. Contact your service
representative.