HPE ProLiant DL380 Gen10 Plus - Page 98

12. Make sure the -48 V DC power source is off or the PDU breaker is in the off position, and then connect the power cord to the -48 V
DC power source or PDU.
13. To supply -48 V to the power supply, turn on the -48 V power source or switch the PDU breaker to the on position.
14. Be sure that the power supply LED is green.
Installing the HPE 800 W Flex Slot -48 VDC hot-plug power supply 98