TP-Link

Omada 1000BASE-SX Gigabit Multi-Mode SFP Module, LC Duplex, 850 nm, 550 m

SKU TPL-SM311LM Model SM311LM

  • Gigabit 1000BASE-SX optics at 850 nm, up to 550 m on 50/125 µm multi-mode fiber
  • LC duplex connector for 50/125 µm and 62.5/125 µm multi-mode fiber runs
  • Hot-swappable, with Digital Diagnostic Monitoring for the optical link
  • SFP-MSA compliant, fits Gigabit SFP slots, rated 32°F to 158°F (0°C to 70°C)
  • Fast shipping from four branches
  • 30-day returns on unopened products

Product highlights

  • RangeUp to 550 m
  • Connectivity1000BASE-SX, 850 nm
  • PortsLC duplex, multi-mode

The Omada SM311LM is a 1000BASE-SX Gigabit SFP module for multi-mode fiber, reaching 550 m on 50/125 µm fiber and 275 m on 62.5/125 µm. It covers the in-building and short campus runs where you already have multi-mode fiber in place.

Built for multi-mode uplinks

The module runs at 850 nm with an LC duplex connector and is hot-swappable, so it can go into a live switch. Digital Diagnostic Monitoring reports link health back to the host. It follows the SFP Multi-Source Agreement and is rated from 32°F to 158°F.

Key features

  • Up to 550 m on 50/125 µm multi-mode fiber, 275 m on 62.5/125 µm
  • LC duplex, 850 nm 1000BASE-SX optics
  • Hot-swappable: install or replace with the host running
  • DDM support for monitoring the optical link

System requirements

A Gigabit SFP slot on a switch or router, and 50/125 µm or 62.5/125 µm multi-mode fiber with LC connectors. Use a matching 1000BASE-SX multi-mode module at the other end of the link.

Specifications

SKUTPL-SM311LM
BrandTP-Link
Form factorGigabit SFP transceiver module
CommunicationEthernet / IP
Power input3.3V from the host SFP slot
Port speedGigabit
Standard1000BASE-SX, IEEE 802.3z
Connector typeLC duplex
Fiber type50/125 µm or 62.5/125 µm multi-mode
Wavelength850 nm
Max distance550 m (50/125 µm), 275 m (62.5/125 µm)
Data rate1.25 Gbps
Compatibility notesSFP-MSA compliant; fits Gigabit SFP slots
Hardware featuresDDM, hot-swappable
Dimensions2.2 x 0.5 x 0.5 in (55.4 x 13.7 x 12.9 mm)
Operating temp32°F to 158°F (0°C to 70°C)
Operating humidity10 to 90% RH, non-condensing
ComplianceFCC, CE
Package contentsSM311LM, installation guide

Documents and resources

FAQs

How far can the SM311LM run?
Up to 550 m on 50/125 µm multi-mode fiber, or 275 m on 62.5/125 µm fiber.
Does it work with single-mode fiber?
No. It is a multi-mode 1000BASE-SX module at 850 nm. Single-mode runs need a single-mode SFP.
Do I need the same module on both ends?
Use a matching 1000BASE-SX multi-mode module at the far end so wavelength and fiber type line up.
Can I swap it without powering down?
Yes. The SM311LM is hot-swappable.