Dell OptiPlex 755 - Manual (Page 227)

3. If your AC power cable has a green ground wire for connection to an electrical outlet, connect the metal ground connector to the grounding source
(often a screw) on the outlet (see the following illustration):
a. Loosen the grounding source.
b. Slide the metal ground connector behind the grounding source, and then tighten the grounding source.
4. Connect the AC power cable to the power outlet.
The AC power adapter has a status light that is off when the adapter is not plugged into the power outlet, and it is green or amber for the following
different states:
l green light — solid green indicates that the power adapter is connected to an AC power outlet and to the computer.
l amber light — solid amber indicates that the power adapter is connected to an AC power outlet but not to the computer. The computer will not
operate in this condition. Connect the AC power adapter to the computer and/or reset the power adapter by disconnecting and reconnecting the
plug to the power outlet.
Dell Badge
The Dell badge on the front of your computer can be rotated. To rotate the badge:
1. Remove the computer cover (see Removing the Computer Cover ).
2. Pull on the lever to release the tab from the slot.
3. Rotate the badge to the desired position, ensuring that the tab is secured in the slot.
1 grounding source (screw)
2 metal ground connector
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.