Ubiquiti EdgeRouter 4 - Power and Grounding; Device Grounding Procedure; Connecting the Power Cord

Grounding the EdgeRouter (Recommended)
The EdgeRouter is grounded through the Power Cord;
however, you can add optional ESD grounding for enhanced
ESD protection.
1. Attach the Ground Screw to secure a ground wire (not
included) to the Grounding Point.
2. Secure the other end of the ground wire to a grounding block.
Connecting Power
1. Connect the Power Cord to the Power port.
2. Connect the other end of the Power Cord to a power outlet.