Dell POWEREDGE R610 - Manual (Page 7)

Getting Started With Your System
5
Securing the Power Cord
Bend the system power cable into a loop as shown in the illustration and
secure the cable with the provided strap.
Plug the other end of the power cables into a grounded electrical outlet or a
separate power source such as an uninterruptible 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.