H3C Technologies H3C S5800 Series Switches - Manual (Page 14)

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Step3 Turn over the RPS unit and place it on the tabletop. Verify the
stableness and good grounding of the table.
Connecting the grounding cable
WARNING!
Correctly connecting the grounding cable is crucial to lightning
protection and EMI protection.
Follow these steps to attach the OT terminal of the grounding cable to
the grounding hole of the RPS unit:
Step1 Remove the grounding screw from the rear panel of the RPS
unit.
Step2 Attach the grounding screw to the OT terminal of the grounding
cable.
Step3 Use a screwdriver to fasten the grounding screw into the
grounding screw hole.