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Important notice: Revised GST rate from 7 percent to 8 percent.

General Description

The FCNCS-1EN-1ES is a Fast Ethernet media converter that can convert Fast Ethernet 10/100Base-TX signal to 100Base-FX signal and the other way round. This converter comes with an SFP slot which can support any 155Mbps small form factor transceiver (SFP) that complies with the Multi-Source Agreement (MSA) standard. The transmission distance of the data signals will be extended depending on the type of 155Mbps SFP transceiver selected. The FCNCS-1EN-1ES Fast Ethernet media converter also comes with the Link Fault Pass-through (LFP) function which allows network links to be monitored for broken links.


  • 10/100Mbps auto-sensed, easily upgrade
  • Full-duplex and half-duplex auto-sensed
  • MDI/MDI-X Auto-Negotiation
  • 10/100Mbps store-and-forward
  • 100Mbps cut-through transmission
  • Supporting extra-long packets up to 1600 bytes
  • Supporting VoIP /QoS packets
  • Support flow control and reduce broadcast packets

Application diagram

Application diagram for the Fast Ethernet Converter


Standards Comply 

  • Standards 

    IEEE802.3 10BaseT
    IEEE802.3u 100BaseT(X)
    IEEE802.3x Flow control and back pressure
    IEEE802.1d Spanning Tree


  • Copper Port
    Data Rate: 
    Connector: RJ45

  • F/O Port
    Data Rate: 
    SFP slot 


  • Processing Type: Store and Forward, Cut-through
  • Back Bandwidth: 400Mbps
  • MAC Address Size: 512Kbit
  • Packet Buffer Size: 1Mbit
  • Time Delay: <10us
  • Frame: 9Kbytes

    LED Indicators 

    • Indicators 
      FL/A (optical link/action)
      TL/A (twisted pairs link/action)
      FDX (FX full-duplex)
      100 (100M transmission rate of twisted pairs)
      PWR (power supply)


    • TP port mode: Auto (default) or Force
    • TP port speed: 100 or 10 when TP at Force
    • TP port duplex: FDX or HDX when TP at Force
    • LFP: LFP enabled (default) or disabled
    • Fiber port duplex: 100 FDX (default) or 100 HDX

    Operating and Environmental 

    • Operating Temperature 
      -20°C ~ 65°C
    • Storage Temperature
      -40°C ~ 85°C
    • Humidity
      5% ~ 95%, non-condensing  

    Dimension and Weight 

    • Dimension (mm)
      70 x 94 x 26 (WxDxH)


    Dimension diagram for FCNCS-1EN-1ES
    • Weight 
      0.4kg (Including external power supply)

    Power Requirement

    • Power adaptor 
      AC input: 100VAC~240VAC, 5V 1A

    • Power Plug
      UK type, 3 pins plug 


    • can be stand-alone, wall-mounted (wall-mounting kit is available separately) or fitted in a chassis for converters