TP-Link

TP-Link TL-SM331T 1000Base-T RJ45 SFP Module

4.6 (163 reviews)

TP-Link TL-SM331T converts any SFP port to a standard RJ45 gigabit Ethernet connection with plug-and-play simplicity.

$19.99*
In Stock on Amazon.com
View on Amazon

*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The TP-Link TL-SM331T is a 1000Base-T copper SFP transceiver module that bridges the gap between SFP-based network infrastructure and standard RJ45 Ethernet cabling. By plugging this module into an available SFP slot on a compatible switch, router, or media converter, you gain an additional gigabit copper port capable of transmitting data up to 100 meters—ideal for situations where you need copper connectivity from fiber-equipped hardware without replacing the device itself.

Designed for simplicity, the TL-SM331T requires no drivers, software, or manual configuration. Its hot-pluggable design means network administrators can add or swap modules on the fly without disrupting other connections, a critical feature in production environments. The durable metal casing dissipates heat effectively and withstands the rigors of rack-mounted deployment. Whether you are expanding port capacity, transitioning infrastructure, or simply need a copper handoff from an SFP-only device, this module delivers reliable gigabit performance with minimal hassle.

Key Features

【SFP to RJ45 1000Base-T Copper SFP】Transmit data seamlessly up to 100 meters between your SFP interface and the copper gigabit port.

【Wide Compatibility】Compatible with most fiber switches, media converters, routers or other fiber optic equipments with SFP ports, SM331T provides additional copper cable connections for peace of mind.

【Easy for deployment】Plug and Play with no software installation or configuration/technician needed.

【Durable Metal Casing】Ensures strength and reliability for a long time, maintaining a stable connection in a wide range of environments.

【Hot Pluggable】Plug in or remove your SFP module without needing to shutdown your network. Hot swap-ability ensures your network always stays up.

Specifications

Brand
TP-Link
Model
TL-SM331T
Interface
SFP to RJ45
Standard
1000Base-T Copper SFP
Data Rate
1 Gbps
Maximum Distance
100 meters
Connector Type
RJ45
Installation
Plug and Play
Hot Pluggable
Yes
Casing
Durable Metal

Pros & Cons

👍 Pros

  • Hot-pluggable design allows installation and removal without network downtime
  • Plug-and-play operation eliminates the need for software configuration or technical expertise
  • Durable metal casing provides reliable performance across a range of environments
  • Broad compatibility with most SFP-equipped network devices from various manufacturers
  • Compact SFP form factor takes up minimal space in equipment racks

👎 Cons

  • Limited to 100-meter maximum transmission distance, same as standard copper Ethernet
  • Supports only 1000Base-T gigabit speeds, not 10 gigabit
  • Module occupies an SFP slot that could otherwise be used for long-distance fiber connections
  • No fiber connectivity—strictly a copper RJ45 transceiver

Frequently Asked Questions

It converts an SFP fiber port on a switch, router, or media converter into a standard RJ45 copper gigabit Ethernet port, allowing you to connect regular Ethernet cables.
The TL-SM331T supports data transmission up to 100 meters using standard copper Ethernet cable.
Yes, the module is hot-pluggable, meaning you can insert or remove it without powering down your switch or router.
No, it is fully plug-and-play with no software installation or configuration required.
It is compatible with most fiber switches, media converters, routers, and other network equipment that have standard SFP ports.