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Perle CM-100-S2ST40 media converter module with RJ-45 and ST ports

Perle

Perle CM-100-S2ST40 100BASE-TX to 100Base-EX 40 km Mount

SKU CH-9JSC-F17Z6

Managed Fast Ethernet converter links 100BASE-TX copper to 100Base-EX single-mode fibre up to 40 km

  • Product typeData & Communication
  • Converts 100BASE-TX to 100Base-EX single-mode fiber
  • Extends network reach up to 40 km over ST connector
  • Operates at 1310 nm wavelength for long-distance links
  • Supports managed or unmanaged modes for flexible deployment
  • Copper port reaches 100 m or 328 ft distance

40 km Fast Ethernet Media Converter

The Perle CM-100-S2ST40 converts 100BASE-TX copper signals to 100Base-EX single-mode fibre using a 1310 nm wavelength. It bridges RJ-45 connections up to 100 m or 328 ft to ST-terminated fibre spans reaching 40 km or 24.9 miles. The module supports managed or unmanaged operation for flexible deployment.

Extends copper links beyond 100 metres

This module replaces a direct copper run when the distance exceeds the 100 m limit of standard Fast Ethernet. The jump is worth it when you need to connect buildings or remote cabinets over single-mode fibre without upgrading to Gigabit infrastructure. Managed operation adds remote configuration and monitoring if required.

Suited for legacy 100 Mbps fibre links

It suits network teams maintaining existing Fast Ethernet backbones that use ST connectors and single-mode fibre. Buyers who need Gigabit or 10 Gigabit throughput should look elsewhere, as this converter is fixed at 100 Mbps. It also does not fit SFP-only chassis or multimode fibre installations.

How it compares

Measured against everything we stock in Stand Legs & Mounting Hardware, at today’s prices. Recalculated every night.

Price $690.99
Pricier than about 84% of the 957 comparable items (median $95.99).

Specifications

Product
Brand namePERLE SYSTEMS
Product typeData & Communication

Questions about this item

Does the CM-100-S2ST40 module require a specific chassis for mounting?

The CM-100-S2ST40 is a media converter module designed for managed or unmanaged operation; it fits into a compatible Perle chassis slot for power and backplane connectivity.

What is the correct fibre polarity when connecting the ST connector?

The 100Base-EX 1310nm single-mode interface uses an ST duplex connector; ensure the transmit port on this module connects to the receive port on the remote device.

When should the SFP transceiver be replaced in this unit?

This module uses a fixed ST connector for 40 km single-mode links rather than a replaceable SFP; replacement is only needed if the entire module fails.

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