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Only use the same transceiver model between switches for fast and reliable connectivity. 

Connection

Port Type

Fiber Type

Data Rate

Wave Length

1310nm

IEEE 802.3z, CSMA/CD, TCP/IP

Single-mode Fiber

Multi-mode Fiber

9/125 um Single-mode

50/125 um or 62.5/125 

um Multi-mode

10km

550m

1.25Gbps

LC

3.3V

FCC, CE

850nm

Standards and Protocols

Operation Temperature

0˚C~70˚C (32˚F~158˚F)

Storage Temperature

-40˚C~80˚C (-40˚F~176˚F)

Storage Humidity

5%~90% RH, Non-condensing

Operation Humidity

Cable

10%~90% RH, Non-condensing

Normal

TL-SM311LM

TL-SM311LS

General Specifications

Environmental and Physical Specifications

Max. Cable Length

Power Support

Safety & Emission

TP-Link Switches with gigabit SFP Slots

MC220L

TP-Link Compatible Products

Note:

The SFP modules may be incompatible with other vendors’ devices. We recommend 

that you use only TP-Link SFP modules on your TP-Link devices. 

Specifications

Switch

Switch

TL-SM311-LS

Fiber

TL-SM311-LS

Do not use this product near water, for example, in a wet basement or near a 

swimming pool.

Avoid using this product during an electrical storm. There may be a remote risk of 

electric shock from lightning. 

Do not point or stare directly into the beam or into the optical port of the transceiver 

when it is operating, as this can injure your eyesight.

SAFETY NOTICES

This is a class A product. In a domestic environment, this product may cause radio 

interference, in which case the user may be required to take adequate measures.

Продукт сертифіковано згідно с правилами системи УкрСЕПРО на відповідність 

вимогам нормативних документів та вимогам, що передбачені чинними 

законодавчими актами України.

CE Mark Warning

Cautions

This equipment has been tested and found to comply with the limits for a Class B 

digital device, pursuant to part 15 of the FCC Rules. These limits are designed to 

provide reasonable protection against harmful interference in a residential 

installation. This equipment generates, uses and can radiate radio frequency energy 

and, if not installed and used in accordance with the instructions, may cause harmful 

interference to radio communications. However, there is no guarantee that 

interference will not occur in a particular installation. If this equipment does cause 

harmful interference to radio or television reception, which can be determined by 

turning the equipment off and on, the user is encouraged to try to correct the 

interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the 

receiver is connected.

• Consult the dealer or an experienced radio/ TV technician for help.

This device complies with part 15 of the FCC Rules. Operation is subject to the 

following two conditions:

1) This device may not cause harmful interference.

2) This device must accept any interference received, including interference that may 

cause undesired operation.

Any changes or modifications not expressly approved by the party responsible for 

compliance could void the user’s authority to operate the equipment.

FCC STATEMENT

©2016 TP-LinK

 

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