HPE ProLiant ML110 Gen11 User Manual page 74

CAUTION: To prevent improper cooling and thermal damage, do not operate the server unless all bays are populated with CAUTION:
either a component or a blank.
Procedure Procedure
1. If you are installing a power supply in the power supply bay 2, remove the power supply blank.
Retain the blank for future use.
Tower mode
Rack mode
2. Immediately slide the power supply into the bay until it clicks into place.
Tower mode
HPE ProLiant ML110 Gen11 Server User Guide 74