Dell OptiPlex 3U083 Setup And Quick Reference Manual page 17

CAUTION: If you decide to connect the green ground wire to an
electrical outlet, do not permit contact between the green ground
wire and power leads because electrical shock, fire, or damage to
your computer can occur (see the following figure).
If you decide not to connect the green ground wire to an electrical
outlet, go to step 4.
Connect the metal ground connector to the grounding source on the
3
outlet (see the following figure):
Loosen the grounding source.
a
Slide the metal ground connector behind the grounding source,
b
and then tighten the grounding source.
Connect the AC power cable to the outlet.
4
grounding source
metal ground connector
Setup and Quick Re ference Guide
15