Dell PowerEdge R910 Guide De Mise En Route page 7

Securing the Power Cable(s)
Bend the system power cable into a loop as shown in the illustration
and secure the cable to the bracket using the provided strap.
Plug the other end of the power cable into a grounded electrical outlet
or a separate power source such as an uninterrupted power supply (UPS)
or a power distribution unit (PDU).
Turning On the System
Press the power button on the system and the monitor. The power indicators
should light.
5
Getting Started With Your System
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