Dell PowerEdge C2100 Getting Started Manual page 9

Connect the system's power cable(s) to the system and, if a monitor is used,
connect the monitor's power cable to the monitor. Plug the other end of the
power cables 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.
7
Getting Started With Your System