Dell PowerEdge T710 Getting Started With page 7

Securing the Power Cable(s)
Bend the system power cable(s) into a loop as shown in the illustration
and secure the cable with the provided strap.
Plug the other end of the power cable(s) 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 on the optional monitor, if used.
The power indicators should light.
5
Getting Started With Your System