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10/100 Mbps Ethernet 4 Port Unmanaged Switches 2 × Electrical + 2 × SFP Optical; 4 × Electrical; 4 × SFP Optical

CNFE4US Series

Example of 10/100 Mbps Ethernet 4 Port Unmanaged Switches 2 × Electrical + 2 × SFP Optical; 4 × Electrical; 4 × SFP Optical

Availability: Worldwide

PDF Datasheet: en  fr  es  
DOC A&E Specs




-40 º to +75 ºC






Made in the USA



The ComNet CNFE4US Ethernet 4 port unmanaged switch Series is designed to transmit and receive 10/100 Mbps data over optical fiber through user selectable SFP options or 10/100 Mbps data over CAT5E/6 electrical cable. This unit integrates 4 independent 10/100 Mbps channels in a single package. The CNFE4FX2TX2US and CNFE4FX4US require the ordering of sold-separately interchangeable SFP modules for fiber type, distance and connectors. The CNFE4FX2TX2US and CNFE4TX4US electrical interfaces will Auto-Negotiate to 10 Mbps, or 100 Mbps Ethernet rate without any adjustments. The optical interfaces operate at a 100 Mbps Ethernet rate.

Features for CNFE4US Series

  • Plug-and-play design ensures ease of installation and no electrical or optical adjustments are ever required.
  • Voltage transient protection on all power and signal input/output lines provides protection from power surges and other voltage transient events.
  • ComFit standard form factor is interchangeable between stand-alone or rack mount use.
  • Uses customer-installed ComNet SFPs for compatibility with a wide range of optical fibers, optical connector types, and optical transmission distances (SFPs ordered separately).
  • Electric Port Supports Auto-negotiation for Full Duplex or Half Duplex Data Throughput
  • Standard ComFit models are hot-swappable.


  • 10/100 Mbps Ethernet
  • High Speed Computer Links

CNFE4US Series Ordering Information

Part NumberDescription
CNFE4FX2TX2US4 Port 10/100 Mbps Ethernet Unmanaged Switch with 2 TX RJ45 Ports, 2 FX SFP Ports
CNFE4FX4US4 Port 100 Mbps Ethernet Unmanaged Switch with 4 FX SFP Ports
CNFE4TX4US4 Port 10/100 Mbps Ethernet Unmanaged Switch with 4 TX RJ45 Ports

* Small Form-Factor Pluggable Module. Sold separately

☞ Power supplies provided in North America only. The power supplies provided with ComNet products are designed for benign 0 º to 50 ºC applications. Hardened power supplies are available; consult the factory to select the right power supply for your application.