HPE ProLiant ML150 Gen9 User Manual page 65

Install the RPS backplane assembly in its tray.
b.
Install the RPS backplane in the server.
c.
Install a hot-plug power input module in power supply bay 1.
13.
If you intend to enable power redundancy in the server, install a second power input module in power
14.
supply bay 2:
Hardware options installation 65