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Small rectangular SFP transceiver module with silver metal finish and LC optical port visible

Allied Telesis

Allied Telesis AT-SPFX/2-90 SFP transceiver 100Base-FX LC 2km

SKU CH-3148-BFGJR MPN AT-SPFX/2-90

Connects Fast Ethernet links over LC fibre up to 2 km with hot-swappable SFP convenience

  • Port count1 × 100Base-FX 1 x LC 100Base-FX Network
  • Product typeSFP
  • Network cablingMetal
  • Supported protocolsFast Ethernet
  • Power adapterHot-swappable
  • HighlightsSold as 1 Each.
  • Extends network reach to 2 km with 100Base-FX fibre connectivity
  • Hot-swappable SFP module enables installation without network downtime
  • LC duplex connector provides secure low-loss fibre termination
  • Lightweight 0.07 kg design simplifies handling in dense patch panels
  • Supports Fast Ethernet protocols for reliable 100 Mbps data transmission

100Base-FX SFP module

The Allied Telesis AT-SPFX/2-90 is a hot-swappable SFP transceiver that adds a single 100Base-FX LC port to compatible network equipment. It operates over multimode fibre at Fast Ethernet speed. The module weighs 0.07 kg and is supplied as a single unit. It provides a straightforward way to extend a link using standard LC cabling.

Suitable for short-haul links

This transceiver suits network operators who need to bridge up to 2 km over multimode fibre at 100 Mbps. It is not intended for gigabit or 10 Gbps links, nor for single-mode fibre runs that exceed the 2 km reach. Buyers requiring longer distances, higher data rates or different connector types should consider other modules.

2 km multimode reach

The decisive specification is the 2 km reach over multimode fibre at 100 Mbps. This distance limit determines whether the module can span the required link without intermediate equipment. Verify that your switch or router supports the AT-SPFX series before purchase.

How it compares

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

Price $62.99
Cheaper than about 68% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameAllied Telesis
Model nameAT-SPFX/2-90
Part numberAT-SPFX/2-90
Product typeSFP
Connectivity
Network cablingMetal
Supported protocolsFast Ethernet
Ports & slots
Port count1 × 100Base-FX 1 x LC 100Base-FX Network
Power
Power adapterHot-swappable
Size & build
Shipping weight0.05 kg
Package size112 × 51 × 33 mm
In the box
In the boxAllied Telesis SFP (mini-GBIC) transceiver module

Questions about this item

Does the AT-SPFX/2-90 produce audible noise or excess heat when running continuously?

The module has no moving parts and draws very little power, so it runs silently and stays cool during all-day operation.

What host equipment is required to use this SFP transceiver?

You need a switch or router with an open SFP slot that accepts 100Base-FX optics; the vendor notes compatibility is limited to specific Allied Telesis models.

Will this transceiver link with older 100 Mbps fibre gear using LC connectors?

Yes, it complies with the 100Base-FX standard over LC duplex fibre up to 2 km, so it interoperates with legacy Fast Ethernet fibre ports.

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