Dell PowerEdge T605 Guide De Mise En Route page 10

Connect the Keyboard, Mouse, and Monitor
Connect the keyboard, mouse, and monitor (optional).
The connectors on the back of your system have icons indicating which
cable to plug into each connector. Be sure to tighten the screws (if any)
on the monitor's cable connector.
Connect the System to Power
Connect the monitor's power cable to the monitor (optional), and connect
the system's power cable(s) to the system.
8
Getting Started With Your System