Dell PowerEdge T300 Guide De Mise En Route page 10

Connecting 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.
Connecting the Power
Connect the system's power cable(s) to the system.
Plug the other end of the cable into a grounded electrical outlet or a separate
power source such as an uninterrupted power supply (UPS) or a power
distribution unit (PDU).
8
Getting Started With Your System