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Compact SFP transceiver module with RJ45 port and metal casing

TP-Link

TP-Link TL-SM331T 1000Base-T RJ45 SFP Module 1.25G Copper SFP Transceiver 2 in 1 accessory

SKU CH-672A-P2WJF

Copper SFP transceiver adds a gigabit RJ45 port to SFP equipment, reaching 100 m with plug-and-play, hot-swappable operation in a metal case

  • Transmit data up to 100 meters over copper cabling
  • Works with most switches and routers that have SFP ports
  • Ready to use immediately with no software setup required
  • Metal casing protects the module for long-term reliability
  • Insert or remove the module without powering down the network

What This Module Does

The TP-Link TL-SM331T is a 1000Base-T RJ45 SFP transceiver that adds a copper Gigabit Ethernet port to any SFP slot. It supports 1.25G data rates over standard twisted-pair cable up to 100 metres. The hot-pluggable design lets you insert or remove the module without powering down the switch or router, keeping the network online during changes. It is built for administrators who need a quick copper link on fibre equipment.

Installation Notes

The module is plug-and-play with no driver or software configuration required, so it works immediately after insertion into a compatible SFP port. Its durable metal casing protects the internal electronics during handling and long-term use. The only common issue is attempting to use it in a port that does not support 1000Base-T copper transceivers or exceeds the 100 metre distance limit on the copper side.

Compatibility Check

Verify that your switch, media converter or router has an SFP port that accepts 1000Base-T copper modules before ordering. Confirm the link distance will stay within 100 metres on standard Cat5e or better cabling. Ensure the host device does not require a proprietary or coded transceiver that would block third-party units. The module draws power directly from the SFP slot, so no external supply is needed.

Highlights

  • Transmit data up to 100 meters over copper cabling
  • Works with most switches and routers that have SFP ports
  • Ready to use immediately with no software setup required
  • Metal casing protects the module for long-term reliability
  • Insert or remove the module without powering down the network

Specifications

No published specifications for this item yet.

Questions about this item

How do I confirm the TL-SM331T is working after plugging it into my SFP port?

The link LED on the connected switch or router will light up at 1000 Mbps, and a cable tester will show a valid 100 metre copper link.

What comes in the box and what must I buy separately?

The module itself is included; you must supply a Cat5e or better RJ45 patch cable to reach the 100 metre distance.

Which version of the TL-SM331T should I choose for a 1.25G SFP slot?

The single 1.25G copper model listed is the only version; it fits any standard SFP port labelled 1000Base-T.

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