Dell OptiPlex 9020 All In One (Mid 2013) - Manual (Page 4)

2. Connect the network cable (optional).
Figure 5. Network Connection
3. Connect the power cable(s).
Figure 6. Connecting Power
4. Press the power button on the computer.
Figure 7. Turning On Power
Specifications
NOTE: Offerings may vary by region. The following specifications are only those
required by law to ship with your computer. For more information regarding the
configuration of your computer, click Start → Help and Support and select the
option to view information about your computer.
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