Ruijie Reyee RG-NIS3100 Series Hardware Installation And Reference Manual page 48

RG-NIS3100 Series Switches Hardware Installation and Reference Guide
4. According to the Ethernet Port Arrester Hardware Installation Guide, connect the arrester using the adapter cable
(note that the external network cable is connected to the end of IN, while the adapter cable connected to the switch is
connected to the end of OUT) and check whether the LED on the board is normal.
5. Use the nylon button to bundle the power cables.
Figure C-2 Schematic Diagram for the Ethernet Port Arrester Installation
The Ethernet port arrester applies to only the 10M/100M electrical Ethernet ports with the RJ45 connector.
The Ethernet port arrester is provided by customers. For more information about arrester installation, refer to
Ethernet Port Arrester Hardware Installation Guide.
To prevent the performance of the Ethernet port arrester from being affected, note the following points:

Reversed direction of the arrester installation: Connect the external network cable to the IN end and connect
the switch Ethernet port to the OUT end.

Poor arrester grounding: The grounding line must be as short as possible to ensure that it is in good contact
with the switch grounding terminal. Use the multimeter to confirm the contact after grounding.

Incomplete arrester installation: If more than one port is connected to the peer device on the switch, install the
arresters on all connection ports for surge protection.
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Appendix C Surge Protection