Dell PowerEdge T105 Getting Started Manual page 9

Connect the System to Power
Connect the system's power cable to the system. Next, 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).
Turn on the System and Monitor
Press the power button on the system and the monitor. The power indicators
should light. Adjust the monitor's controls until the displayed image is
satisfactory.
7
Getting Started With Your System