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Compact metal box with one RJ45 port and one open SFP slot, matte black finish

STARTECH

STARTECH ET91000SFP2 Gigabit Fiber Media Converter Open SFP Slot

SKU CH-Z8RW-9ZCE8 MPN ET91000SFP2

Convert and extend a Gigabit Ethernet connection over fiber using any MSA-compliant SFP module

  • Port count1 x SFP Slot Female 1 x RJ-45 Female
  • Product typeConverter
  • Supported standardsIEEE 802.3ab 1000BASE-T IEEE 802.3u 100BASE-LX IEEE 802.3z 1
  • Supported protocolsTCP/IP
  • Transfer speed1.25 Gbit/s
  • Power adapterCenter Tip Polarity: Positive Input Current: 0.36A Input Vol
  • Extend networks over fiber using your chosen SFP module
  • Convert Gigabit Ethernet to fiber at 1.25 Gbps transfer rate
  • Operate reliably from 0 to 60 °C with 10–90 % humidity tolerance
  • Power from 100–240 V AC adapter consuming 8 W
  • Compact 0.91 × 6.06 × 3.46 inch metal enclosure weighs 0.87 lb

Open SFP Slot Media Converter

The StarTech ET91000SFP2 converts a copper Gigabit Ethernet link to fibre using any MSA-compliant SFP module you supply. It suits installers who need to bridge buildings or extend a network beyond the 100-metre copper limit without committing to a fixed transceiver.

Sustained Load Behaviour

The converter handles a continuous 1.25 Gbps transfer rate across its RJ-45 and SFP ports while drawing up to 8 W from the included universal AC adapter. Operating temperature is rated 0 to 60 °C and humidity tolerance reaches 90 % non-condensing, so the unit remains stable in warm equipment cabinets during long-term operation.

Upgrade Path and Fit

This model replaces fixed-transceiver converters such as the ET91000LC2 by letting you choose single-mode or multi-mode fibre per link. The jump is worthwhile when you need flexibility to change reach or fibre type later, but it is not for buyers who want a pre-installed SFP or a managed switch with multiple ports.

How it compares

Measured against everything we stock in SFP & SFP+ Transceiver Modules, at today’s prices. Recalculated every night.

Price $140.99
Typical for this category: the median of 1,471 items is $138.99.

Specifications

Product
Brand nameStarTech.com
Model nameET91000SFP2
Product typeConverter
Performance
Transfer speed1.25 Gbit/s
Connectivity
Supported standardsIEEE 802.3ab 1000BASE-T
IEEE 802.3u 100BASE-LX
IEEE 802.3z 1000BASE-SX
Supported protocolsTCP/IP
Ports & slots
Port count1 x SFP Slot Female
1 x RJ-45 Female
Size & build
Product dimensions0.91 in × 6.06 in × 3.46 in
Product weight0.87 lb (0.39 kg)
Shipping weight0.78 kg
Package size231 × 191 × 76 mm
In the box
In the box1 x Fiber Media Converter
1 x Universal Power Adapter (NA / UK / EU)
1 x Grounding Screw
1 x Instruction Manual
Environment & compliance
Temperature rangeOperating Temperature: 0 to 60 degree Celsius (32 to 140 degree Fahrenheit)
Storage Temperature: -10 to 70 degree Celsius (14 to 158 degree Fahrenheit)
Humidity range10 to 90% RH (Non-Condensing)

Questions about this item

How much heat does the 8-watt converter add to a rack that runs 24/7?

The unit draws 8 watts from its 12 V DC supply and is rated for continuous operation at up to 60 °C ambient, so it adds minimal heat to a cooled cabinet.

What SFP module do I need to make the RJ-45 and fiber ports talk to each other?

Any MSA-compliant Gigabit SFP — 1000BASE-SX, 1000BASE-LX or 100BASE-LX — plugs into the open slot and sets the fiber type and reach.

Will the RJ-45 port link at 1000 Mbps with my older 100 Mbps switch?

The copper port follows IEEE 802.3ab for 1000BASE-T; it will negotiate down to 100 Mbps if the connected switch only supports Fast Ethernet.

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