Dell PowerEdge C6145 Getting Started page 9

Connecting the Power Cable(s)
Figure 5. Connecting the Power Cable
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 or a power distribution unit.
Getting Started With Your System | 7