Watch the procedure. A video of this procedure is available from the following links: 
• 
https://www.youtube.com/playlist?list=PLYV5R7hVcs-C6QgmsUMRG6ul0bHzrGmsG
•  https://list.youku.com/albumlist/show/id_54461099
Procedure
Step 1.  Make preparations for this task. 
a.  Make sure the power supply unit to be installed is of the same wattage as the installed ones. 
Otherwise, complete the following steps: 
1.  Turn off the server and peripheral devices.
2.  Disconnect the power cords and all external cables.
3.  Remove all the installed power supply units.
4.  Make sure all the power supply units to be installed are of the same wattage. Do not mix 
power supply units of different wattages in the same unit of server.
b.  If CMA has been installed, do the following: 
Figure 57. Adjusting CMA
1.  Press down the stop bracket and rotate it to the open position.
2.  Rotate the CMA out of the way to gain access to the power supply bay.
Note: Make sure the cables are secured to the CMA with cable straps.
c.  If you are installing the power supply into an empty bay, remove the power supply filler panel 
from the power supply bay.
d.  If more than one units are to be installed, start with the lowest available power supply bay.
Step 2.  Grasp the handle on the rear of the power supply, and slide it into the power-supply bay until it 
clicks into place.  
Chapter 5. Server hardware setup 169