3com S7906E Quick Setup Guide

 

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If there is a grounding strip in the Ethernet switch installation environment, attach one end of the 

yellow-green protection grounding cable to the grounding screw of the grounding strip and fasten 

the captive nuts. The grounding cable of a switch shall be connected to the project ground of the 

equipment room. 

Figure 3-3 Connect the protection grounding cable to the grounding strip 

Power input

Ethernet 

Switch

Grounding strip

Protection  grounding cable

Grounding screw

Ethernet 

Switch

Ethernet 

Switch

 

 

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If there is no grounding strip but earth nearby and the grounding body is allowed to be buried, you 

can simply hammer an angle iron or steel pipe no shorter than 0.5m into the earth. In this case, the 

yellow-green protection grounding cable should be welded with the angle iron (steel pipe) and the 

joint should be processed against eroding. 

Figure 3-4 Connect the protection grounding cable to the grounding body nearby 

Power input

Ethernet Switch

Grounding screw

Angle steel

Ground

Protection  grounding cable

 

 

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If there is no grounding strip and no grounding body can be buried, the AC-powered Ethernet 

switch can be grounded through the PE wire of the AC power supply. In this case, make sure that 

the PE wire of the AC power supply has been well grounded at the power distribution room or AC 

power supply transformer side.