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TP-LINK TL-SM311LS SFP Module - 1. 25GbE 1000Base-LX Single-Mode Fiber - LC/UPC - 20km Reach - Hot-Swappable

SKU: TL-SM311LS
UPC: 801096850728
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$27.99
Warranty Information: 2 Year
Condition: New
Width: 1.23 (cm)
Height: 1.23 (cm)
Depth: 1.23 (cm)

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Product Features

Description

Product Overview

The TP-LINK TL-SM311LS is a hot-swappable SFP optical transceiver module engineered for reliable single-mode fiber connectivity in data and optical networks. This module delivers 1.25 Gigabit Ethernet performance using the 1000Base-LX standard, making it a fundamental component for extending network reach over fiber infrastructure.

Designed with an LC/UPC duplex connector, it supports transmission distances up to 20 kilometers (12.4 miles) over 9/125µm single-mode fiber. Its compact, hot-swappable form factor allows for easy installation and maintenance without disrupting network operations, providing a flexible upgrade path for compatible TP-Link networking equipment.

Optics
25GbE
Link Speed
LC/UPCOptical Fiber
Module Format & Speed
Form FactorSFP (mini-GBIC)
Network Technology1000Base-LX
Ethernet Speed1.25 Gigabit Ethernet
Fiber & Connector
Fiber ModeSingle-mode
Connector TypeLC/UPC
Port Count1
Performance & Reach
Wavelength1310nm
Maximum Distance20 km (12.4 miles)
Duplex ModeFull-duplex

Technical Overview

This SFP module operates at a 1310nm wavelength and is built for the 1000Base-LX Ethernet standard, ensuring interoperability within Gigabit Ethernet networks. The single LC/UPC port facilitates a duplex connection over single-mode fiber, which is ideal for long-distance, high-bandwidth applications where signal integrity over extended runs is critical.

The module's design emphasizes operational simplicity and reliability. It is hot-swappable, enabling installation or replacement while the host device is powered on, which minimizes network downtime. The internal electronics are calibrated for single-mode fiber, optimizing performance for the 9/125µm fiber core diameter commonly used in backbone and campus network links.

Data Rate1.25 Gbps
Max Transmission Distance20 km
Wavelength1310 nm
Hot-SwappableLC/UPC ConnectorSingle-Mode Fiber

Key Product Advantages

The TL-SM311LS provides a cost-effective and dependable solution for integrating fiber optic segments into copper-based networks or extending existing fiber backbones. Its compatibility with a broad range of TP-Link switches and media converters ensures seamless deployment within TP-Link ecosystems.

Extended Reach Capability

Supports links up to 20 kilometers, enabling connectivity between geographically separated buildings or across large campuses without signal degradation.

  • Ideal for backbone and long-haul connections
  • Maintains signal integrity over distance

Broad TP-Link Compatibility

Engineered to work with TP-Link JetStream managed switches, smart switches, and media converters like the MC220L, ensuring reliable performance within certified environments.

  • Verified for TP-Link SFP ports
  • Supports media converter applications

Deployment / Use Cases

This SFP module is suited for scenarios requiring reliable, high-speed fiber connectivity over medium to long distances. It acts as a critical interface between network switches and fiber optic cabling.

Common applications include connecting network switches between different floors or buildings in an enterprise campus, linking a media converter to extend a network over fiber, or integrating into internet service provider (ISP) access networks. It is particularly valuable in environments where electromagnetic interference, distance, or security concerns make copper cabling impractical.

Form Factor Hot-swappable
Ports 1

What's in the Box

The package includes the SFP module and an installation guide to assist with proper handling and setup.

MiniGBIC Module Installation Guide
MiniGBIC Module
[custom-highlights]

Highlights

  • Hot-swappable SFP (mini-GBIC) form factor for easy installation and maintenance.
  • 1000Base-LX standard for 1.25 Gigabit Ethernet over single-mode fiber.
  • LC/UPC duplex connector for reliable optical fiber interfacing.
  • 1310nm wavelength operation optimized for single-mode transmission.
  • Maximum reach of 20 kilometers (12.4 miles) over 9/125µm fiber.
  • Full-duplex operation for simultaneous bidirectional data flow.
  • Compatible with TP-Link switches (JetStream series, TL-SG, TL-SL models) and MC220L media converter.
  • Includes protective dust plugs to safeguard optical interfaces during handling and storage.
[/custom-highlights][custom-specifications]

Specifications

Specifications
ManufacturerTP-LINK Technologies Co., Ltd
Manufacturer Part NumberTL-SM311LS
Brand NameTP-Link
Product ModelTL-SM311LS
Product NameMiniGBIC Module
Product TypeSFP (mini-GBIC)
Technical Information
Application/UsageData Networking,Optical Network
Interfaces/Ports
Total Number of Ports1
Connector TypeLC/UPC
Interfaces/Ports Details1 x LC/UPC Duplex 1000Base-LX Network
Media & Performance
Media Type SupportedOptical Fiber
Fiber Mode SupportedSingle-mode
Ethernet Technology1.25 Gigabit Ethernet
Network Technology1000Base-LX
Physical Characteristics
Form FactorHot-swappable
Miscellaneous
Package ContentsMiniGBIC Module Installation Guide
CompatibilityTP-Link MC220L Gigabit Ethernet Media Converter TP-Link Switches: T3700G-28TQ TL-SG5412F TL-SG5428 TL-SL5428E TL-SG3210 TL-SG3216 TL-SG3424 TL-SG3424P TL-SL3428 TL-SL3452 TL-SG2210P TL-SG2216 TL-SG2424 TL-SG2424P TL-SG2452 TL-SL2210 TL-SL2218 TL-SL2428 TL-SL2452
Country of OriginChina
Environmentally FriendlyYes
Warranty
Limited Warranty2 Year
[/custom-specifications][custom-faq]

FAQ

What type of fiber cable is required for this SFP module?

The TL-SM311LS is designed for use with single-mode fiber optic cables. Specifically, it requires 9/125µm core/cladding diameter single-mode fiber with LC/UPC connectors to achieve its rated performance and maximum transmission distance of 20 kilometers.

What is the maximum data rate and transmission distance supported?

This module supports a data rate of 1.25 Gigabits per second, corresponding to the 1000Base-LX Gigabit Ethernet standard. It can transmit data over single-mode fiber for distances up to 20 kilometers (approximately 12.4 miles), making it suitable for long-distance network links between buildings or across campuses.

Is this SFP module hot-swappable?

Yes, the TL-SM311LS features a hot-swappable form factor. This allows you to install or remove the module from a compatible switch or media converter without powering down the host device, facilitating maintenance and upgrades with minimal network disruption.

Which TP-Link devices is this module compatible with?

It is compatible with TP-Link networking equipment that features SFP ports. This includes specific models of JetStream managed switches, smart switches (such as the TL-SG and TL-SL series), and the MC220L Gigabit Ethernet Media Converter. Always verify compatibility with your specific device model before purchase.

[/custom-faq]
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TP-LINK TL-SM311LS SFP Module - 1. 25GbE 1000Base-LX Single-Mode Fiber - LC/UPC - 20km Reach - Hot-Swappable
$27.99
Out of stock