TP-Link TL-SM311LM Gigabit Multi-Mode SFP Fiber Module

The TP-Link TL-SM311LM is a Gigabit multi-mode SFP (Small Form-Factor Pluggable) module designed to extend network distances beyond standard copper cabling limitations. This fiber optic transceiver operates at 850nm wavelength and supports data transmission up to 550 meters over multi-mode fiber, making it suitable for building-to-building connections and extended LAN applications.

Key Specifications

This MiniGBIC module delivers 1.25Gbps data transfer rates through its LC/UPC connector interface. The transceiver supports both 50/125µm and 62.5/125µm multi-mode fiber types, providing flexibility for various network infrastructures. Operating on 3.3V power supply, the module integrates seamlessly with TP-Link managed and smart switches to create cost-effective fiber network solutions.

Network Extension Capabilities

The TL-SM311LM addresses distance limitations inherent in copper-based networking. When attached to compatible TP-Link switches, this fiber module extends connection ranges to several hundred meters, satisfying most local area network distance requirements. The 550-meter maximum cable length specification makes it practical for campus networks, industrial facilities, and multi-building deployments where electromagnetic interference or distance constraints make copper cabling impractical.

Technical Compliance

Built to IEEE 802.3z standards with CSMA/CD and TCP/IP protocol support, the module ensures compatibility with standard Gigabit Ethernet networks. FCC and CE certifications validate its safety and emission standards compliance. The compact form factor measures 2.2 x 0.5 x 0.5 inches (55.4 x 13.7 x 12.9 mm), fitting standard SFP slots without requiring additional space.

What This Product Does

The TL-SM311 series Fiber Module Cards are introduced for extending transfer distance. Attached to our managed/smart switches, they can extend the distance to several kilometers even tens of kilometers which can basically satisfy the distance requirement of LAN. Users can choose whether and which items to use the fiber modules according to the demand in order to lower cost.

Specifications

PACKAGE CONTENTS

Package Contents:
• SFP Module TL-SM311LM
• Installation Guide

MEDIA CONVERTER & MODULE

Standards and Protocols:
IEEE 802.3z, CSMA/CD, TCP/IP

Wave Length:
850nm

Dimensions (W*D*H):
2.2*0.5*0.5 in (55.4*13.7*12.9 mm)

Power Supply:
3.3V

Safety & Emission:
FCC, CE

Cable:
Multi-mode Fiber

Fiber Type:
50/125µm or 62.5/125µm Multi-mode

Max. Cable Length:
550m

Data Rate:
1.25Gbps

Port Type:
LC/UPC

• Type: SFP Module
• Speed: N/A
• PoE: N/A