Step 2 Slidethe chassis into the rack until the front flange is flat against the cage nuts. (Cage nuts are not needed in
roundhole racks.)
Step 3 Usingthe six Phillips round washer head screws and the cage nuts (used in square hole installations), secure
thechassis by its flanges to the rack as shown.
Figure 24: Securing the Chassis Into the Rack
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Step 4 Replaceall servers, fans,and power supplies back into their respective chassis slots.
Step 5 Topower up the chassis, connect the appropriate AC power cables to the inlet connector corresponding to
eachinstalled power supply, and then connect the other end of the cables to the power source. For a DC
installation,see Connecting a DC Power Supply, on page 44.Todetermine the number of power supplies
neededfor a given configuration, use the Cisco UCSPower Calculatortool.
Cisco UCS 5108 Server Chassis Installation Guide
OL-20035-05 43
Installation
Inserting the Chassis into the Rack