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Black Box FlexPoint RS-232 to Fiber Converter - serial port extender

Mfg # ME661A-MST CDW # 5227479

Quick tech specs

  • 232 to Fiber Converter
  • serial RS-232
  • up to 5 km
  • Serial port extender
  • 9 pin D-Sub (DB-9) / ST multi-mode
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Know your gear

  • Autosenses speeds up to 115.2 kbps.
  • Works as a standalone or a hot-swappable chassis-based extender.
  • Easy to install.
  • Includes a DC power supply. Or you can power multiple units with the space-saving 19" rackmountable FlexPoint Power Chassis.
  • Features DTE/DCE configuration for easy connections to DTE or DCE devices using straight-through cabling.
  • Supports half- and full-duplex.
  • Remote loop capability for remote fiber testing and LEDs for status monitoring.


  • Extend async RS232 devices beyond the 50 ft limitation using multimode fiber cables at data rates up to 115.2 kbps and reach distances of 3.1 mi. (5 km). Serial extenders work well in factory automation, building automation, and process automation where PLC's with RS232 interfaces are used to control devices. The ability to extend the distance to their devices over multimode fiber while also adding protection from electrical interference, which can be caused by large motors, which are prevalent in these environments, is very beneficial.

    This item was discontinued on June 15, 2022

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