Hardware options installation 
c. Install the DIMM.
8. Install the air baffle.
9. Install the access panel.
10. Install the server in the rack.
11. Connect each power cord to the server.
12. Connect each power cord to the power source.
13. Power up the server.
To configure the memory mode, use the BIOS/Platform Configuration (RBSU) in the UEFI System Utilities. 
For more information about LEDs and troubleshooting failed DIMMs, see "Systems Insight Display 
combined LED descriptions."