TL-SM311LS - Network switch TP-LINK - Free user manual and instructions

Product Type	Gigabit SFP Module
Brand	TP-Link
Model	TL-SM311LS
Form Factor	SFP (Small Form-factor Pluggable)
Connector Type	LC Duplex
Fiber Mode	Multi-mode
Data Rate	1.25 Gbps (Gigabit Ethernet)
Maximum Distance	550 m (at 1 Gbps)
Wavelength	850 nm
Operating Temperature	0°C to 70°C (32°F to 158°F)
Power Consumption	Typically < 1W (powered via host device)
Dimensions (W x D x H)	2.76 x 0.87 x 0.55 inches (70 x 22 x 14 mm)
Weight	0.04 lb (18 g)
Compliance	IEEE 802.3z, MSA compliant
Maintenance	Clean with lint-free cloth and isopropyl alcohol; store in anti-static bag
Safety Precautions	Avoid electrostatic discharge; do not look into fiber ports with active laser
Repairability	No user-serviceable parts; replace if defective
Warranty	Limited lifetime warranty (TP-Link)

Frequently Asked Questions - TL-SM311LS TP-LINK

What is the TL-SM311LS used for?

The TP-Link TL-SM311LS is a Gigabit SFP module designed to connect network switches or routers to multi-mode fiber optic cabling, enabling high-speed data transmission up to 550 meters.

Is the TL-SM311LS compatible with any switch?

It is compatible with any switch or device that has a standard SFP slot and supports MSA (Multi-Source Agreement) compliant modules. Always check your device's compatibility list.

What type of fiber cable does it require?

It requires multi-mode fiber (typically 50/125 µm or 62.5/125 µm) with LC duplex connectors.

How do I install the TL-SM311LS?

Insert the module into an available SFP slot until it clicks. Connect the fiber cable to the LC ports. Ensure proper orientation and avoid bending the fiber too tightly.

Why is the link not establishing?

Check that the fiber cable is properly connected, the switch port is enabled and configured for the same speed/duplex, and the fiber is not damaged. Also verify that the remote device uses a compatible module (same wavelength and fiber type).

Can the TL-SM311LS be used with single-mode fiber?

No, this module is designed for multi-mode fiber only. Using single-mode fiber may result in high signal loss or no link. Use a single-mode SFP (like TL-SM311SS) for single-mode.

What is the maximum distance supported?

At 1 Gbps, the maximum distance is 550 meters over 50/125 µm multi-mode fiber. With 62.5/125 µm fiber, the distance may be limited to 220 meters.

Does the module require external power?

No, the module draws power directly from the host device via the SFP slot. Power consumption is typically less than 1 watt.

How should I clean the fiber connectors?

Use a lint-free cloth slightly moistened with isopropyl alcohol and gently wipe the end face of the connector. Avoid touching the end face with fingers. Use a fiber optic inspection scope if available.

Is the TL-SM311LS hot-swappable?

Yes, SFP modules are designed to be hot-swappable. However, it is recommended to disable the port before removal to avoid data errors or port damage.

USER MANUAL TL-SM311LS TP-LINK

The TL-SM311 Series Mini GBIC Module supports hot plug and play. The TL-SM311 Series Mini GBIC Module can be installed not only in TP-LINK switches but also in switches of any other brand.

Warning:

To avoid ESD, do not touch the output pins on the module with your hand.

7. Working Environment

Power supply: supplied by Switch Operating Temperature: 0°C \~ 70°C ➢ Storage Temperature: -40°C \~ 70°C Operating Humidity: 10% \~ 90% RH (no-condensing) ➢ Storage Humidity: 5% \~ 95% RH (no-condensing)

Appendix: Contact Information

For help with the installation or operation of the TP-LINK

TL-SM311 Series Mini GBIC Module, please contact us.

TP-LINK TECHNOLOGIES CO., LTD.

Add: FI.3, Bldg.R1-B, High-Tech Industrial Park, Shennan

Road, Shenzhen, China

E-mail: [e-mail]

Website: http://www.tp-link.com

TP-LINK®

User's Guide

TL-SM311 Series

TL-SM311 Series Mini GBIC Module

COPYRIGHT & TRADEMARKS

Specifications are subject to change without notice.

TP-LINK® is a registered trademark of TP-LINK TECHNOLOGIES Co., Ltd. Other brands and product names are trademarks or registered trademarks of their respective holders.

No part of the specifications may be reproduced in any form or by any means or used to make any derivative such as translation, transformation, or adaptation without permission from TP-LINK TECHNOLOGIES Co., Ltd. Copyright © 2005 TP-LINK TECHNOLOGIES Co., Ltd. All rights reserved.

1. Introduction

The TL-SM311 Series Mini GBIC Module uses fiber as the transmission medium and cooperates with TP-LINK switches. It can effectively extend the diameter and bandwidth of the workgroup. The TL-SM311 series Mini GBIC Module is fully compliant with the IEEE802.3z protocol. Its wavelength is about 850nm and 1310nm. The TL-SM311 Series Mini GBIC Module is easy to use and can be installed inside the switch, which supplies power directly. The TL-SM311 Series Mini GBIC Module can cooperate with several series of TP-LINK switches.

2. Naming

TL-SM311LS: 1000Base-LX SMF Mini GBIC Module TL-SM311LM: 1000Base-SX MMF Mini GBIC Module

1. Type of module and the distance of transmission

TP-LINK SWITCH	DISTANCE:X	Remote device DTE
TL-SM311	FIBER/CABLE

THE TYPE OF MODULE MAXIMAL DISTANCE

TL-SM311LS X≤10000m

TL-SM311LM X≤550m

4. Features of the product

Multi-mode/Single-mode Mini GBIC Module operate at 850nm/1310nm. Multi-mode Mini GBIC Module use the 50/125um, 62.5/125um fiber, Single-mode Mini GBIC Module use the 9/125um fiber. Comply with IEEE802.3z standard. Supply full duplex mode. The maximal transmission distance of Multi-mode/Single-mode Mini GBIC Module is 550m/10000m. Option for some TP-LINK Switches. Support hot plug and play.

5. Installation Guide

Push Mini GBIC Module into Switch along the track smoothly. Plug fiber into the module, without any configuration manually, the Mini GBIC Module can work.