StarTech.com Gigabit Ethernet Copper-to-Fiber Media Converter - SM LC 20 km

StarTech.com ET91000SM20

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Manufacturer Part#  ET91000SM20

UPC Code: 065030864947

Provantage Code:  STR93YQ

Condition:  Factory New

  • Limited Warranty: 2 Year
  • Fiber Mode Supported: Single-mode
  • Country of Origin: Taiwan
  • Maximum Distance Supported: 12.43 Mile
  • TAA Compliant: Yes

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NetworkingNetwork DevicesTransceivers/Media Converters


StarTech.com ET91000SM20 Specifications

    Gigabit Ethernet Copper-to-Fiber Media Converter - SM LC 20 km

At a Glance

    Rear View
    • Flexible network integration, with support for standalone operation, or installation into the StarTech.com Rackmount Chassis (ETCHS2U - sold separately)
    • Converts copper to fiber and extends your network up to 20 km (12.4 mi.) using single-mode LC fiber-optic cable (1310 nm)
    • Removable SFP module (LC fiber connector) can be replaced should your network infrastructure change
    • Supports Link Fault Passthrough (LFP), Auto Laser Shutdown (ALS), and Auto MDIX
    • Up to 9.6K Jumbo Frame support
    • Supports full or half-duplex operation, as well as autonegotiation or forced mode
    • Media converter's card module is compatible with enclosures from other StarTech.com ET91000 series media converters (sold separately)
    • Compatible with Gigabit (1000Mbps) copper (IEEE 802.3ab, 1000BASE-T) and fiber (IEEE 802.3z, 1000BASE-LX) protocols
    • Fast, hassle-free setup
    • Rugged steel enclosure


    This Gigabit Ethernet to fiber media converter is a cost-effective way to extend your network, or extend the distance between two devices by up to 20 km (12.4 mi.).

    Fiber network connections provide greater distance and security, with less electromagnetic interference (EMI) than typical RJ45 copper-based networks, making it perfect for IT professionals and secure setups in government, business, or educational applications.

    Flexible integration into mixed network environments

    This versatile copper-to-fiber converter supports standalone operation, or alternatively it can be installed into the StarTech.com Rackmount Chassis (ETCHS2U - sold separately), giving you more options for integration into your existing network. The card module can also be inserted back into the ET91000SM20 enclosure, plus it's compatible with enclosures from other StarTech.com ET91000 series media converters (sold separately).

    The converter features a pre-installed Gigabit SFP transceiver with LC connectors. Should your network infrastructure change in the future, you can easily swap and replace the module to adapt the media converter to your new network requirements.

    With flexible integration and connectivity up to 20 km away, you can provide network access to remote areas in other buildings, or in areas where Wi-Fi® is unreliable or unavailable.

    Rugged and reliable

    This heavy-duty fiber media converter is designed for maximum reliability. It features a metal (steel) enclosure, so it can withstand the demands of harsh environments such as factories or warehouses.

    Plus, by relying on this more durable fiber media converter, you can reduce the strain on your existing copper-based network equipment and potentially extend the life of those devices, which helps save future expenses.

    Diagnose and correct issues easily

    This high-performance media converter supports a range of network setup and diagnostic protocols (for example, Link Fault Passthrough, Auto Laser Shutdown (ALS), and Auto MDIX, so you can set up and troubleshoot your network easily.

    Prepare your network for the future

    If your existing network consists of RJ45 copper-based devices and cables, you might not be ready for future network expansion. Because the newest fiber-based network switches feature SFP ports more often than RJ45 ports, you might need a converter to bridge your copper and fiber networks together.

    The ET91000SM20 is backed by a StarTech.com 2-year warranty, and free lifetime technical support.

    More from the Manufacturer

Environmental Certification




Package Contents

    • Gigabit Ethernet Copper-to-Fiber Media Converter - SM LC - 20 km
    • 1 x Universal Power Adapter (NA/EU/UK/AU)
    • 1 x Grounding Screw
    • 1 x Instruction Manual

Additional Product Images


Product NameGigabit Ethernet Copper-to-Fiber Media Converter - SM LC 20 km
Manufacturer Part NumberET91000SM20
Product TypeTransceiver/Media Converter
Ethernet TechnologyGigabit Ethernet
Number of Network (RJ-45) Ports1
Network (RJ-45)Yes
Number of LC Ports1
Media Type SupportedOptical Fiber

Twisted Pair

Fiber Mode SupportedSingle-mode
Total Number of Ports2
LC Port TypeDuplex
TAA CompliantYes
Form FactorRack-mountable


Network Technology1000Base-T


Maximum Distance Supported12.43 Mile
Power SourceAC Adapter
Environmentally FriendlyYes
Management PortNo
Fiber Optic Wavelength1310 nm
Country of OriginTaiwan
Plug / Connector TypeType M
Power Consumption19.20 W
Packaged Quantity1
Limited Warranty2 Year
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Supplies/Accessories for StarTech.com ET91000SM20

StarTech.com 1 Port PCIe Gigabit PCIe Network Card - NIC Adapter

Mfg Part# ST1000SPEX2

StarTech.com Dual Port Gigabit PCIe Network Card - PCIe

Mfg Part# ST1000SPEXD4

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