Hardware options installation 113
3. Insert the power supply into the power supply bay until it clicks into place.
4. Connect the power cord to the power supply.
5. Route the power cord. Use best practices when routing power cords and other cables. A cable
management arm is available to help with routing. To obtain a cable management arm, contact an HP
authorized reseller.
6. Connect the power cord to the AC power source.
Be sure that the power supply LED is green.
x4 Redundant Power Supply backplane option
WARNING: When the x4 RPS kit is installed, at least three power supply modules must be
installed in the server.
To install the component:
1. Do one of the following:
o For tower models, open and remove the tower bezel ("Remove the tower bezel" on page 30).
o For rack models, if installed, remove the security bezel ("Remove the security bezel (optional)" on
page 30).
2. Power down the server (on page 29).
3. Remove all power:
a. Disconnect each power cord from the power source.
b. Disconnect each power cord from the server.
4. Do one of the following:
o For tower models, place the server on a flat, level surface with the access panel facing up.
o For rack models, extend the server from the rack (on page 33).
5. Remove the access panel (on page 31).
6. Remove the air baffle (on page 33).
7. Remove the fan cage (on page 36).
8. Disconnect all cables connected to the expansion boards and remove all expansion boards.
9. Disconnect all cables from the system board.
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