Optical modules should be plugged into the switch's SFP, SFP+, or other designated optical ports, not standard RJ45 Ethernet ports.

Choosing the Correct Port

Optical modules, such as SFP (Small Form-Factor Pluggable) or SFP+ transceivers, are designed to be inserted into SFP or SFP+ ports on a switch. These ports are modular and support fiber optic connections, enabling long-distance and high-speed data transmission, unlike standard RJ45 Ethernet ports which only support copper cables and shorter distances .

• SFP ports typically support 1 Gbps fiber connections.
• SFP+ ports support higher speeds, up to 10 Gbps, and are often backward-compatible with SFP modules at 1 Gbps, though SFP+ modules cannot be used in SFP ports .
• Combo ports may offer both RJ45 and SFP interfaces, but only one can be active at a time .

Installation Guidelines

1. Handle the module carefully by its sides; avoid touching the card-edge connectors .
2. Insert the module into the SFP/SFP+ port until it clicks into place. If the module has a handle, push it to secure the module .
3. Connect the fiber optic cable to the module after it is securely installed. Always disconnect the fiber before removing the module to prevent damage .

Compatibility Considerations

• SFP modules can usually be inserted into SFP+ ports, but the connection will operate at 1 Gbps instead of 10 Gbps .
• SFP+ modules cannot be used in SFP ports because they require higher speeds that SFP ports do not support .
• Ensure the fiber type (single-mode or multimode) and connector type (LC, SC, MPO) match the module and port specifications .

Summary

To connect an optical module, always use the switch's designated optical port (SFP, SFP+, or similar). Avoid plugging optical modules into standard RJ45 Ethernet ports, as they are incompatible. Verify module type, port type, and fiber specifications to ensure proper operation and optimal network performance .