Connect The Usb Keyboard Or Mouse; Connect The Network Cable; Connect The Power Cable - Dell OptiPlex 390 Setup & Features Manual

Figure 7. VGA Connector
2. Connect the USB keyboard or mouse (optional).
Figure 8. USB Connection
3. Connect the network cable (optional).
Figure 9. Network Connection
4. Connect the power cable(s).
Figure 10. Connecting Power
5. Press the power buttons on the monitor and the computer.
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