COM-4CX-USB Serial Communication USB I/O Unit RS-232C 4ch - X Series

  • Discontinued
  • Standard Warranty1 yr
  • Extended WarrantyAvailable
  • End of Repair Service: 2027/08/02

Check a compatible replacement

* The end of repair date may change depending on the situation.

  • Max. 921,600bps RS-232C Serial Communication)
  • Possibly used as Windows-standard COM ports, using the bundled driver library
  • Each channel is equipped with separate 128-byte / 384-byte FIFO buffers for transmit and receive.
  • Compatible to USB1.1/USB2.0
  • USB HUB function
  • *
    For details about an extended warranty, please contact us

Ordering Information

Replacement Product

Model Definition
RS-232C 4ch Serial I/O Unit for USB
There are some differences between COM-4CX-USB and COM-4CN-USB, such as dimensions, conditions of use and USB hub function. For details, please see manuals.

Ordering Information

Model Description Certification
COM-4CX-USB [Limited Stock] [End of Repair Service : 2 August, 2027] Serial Communication USB I/O Unit RS-232C 4ch - X Series
  • CE marking
  • FCC compliant
  • VCCI



Item Item Name
RSC-9F Cross Cable, RS-232C D-SUB9P(1.8m)
RSS-25M/9F Straight cable for Connector Conversion, RS-232C(25M -> 9F, 1.8m)
RSS-9M/F Straight Cable, RS-232C D-SUB9P(1.8m)

Power Supply / AC Adapter

Item Item Name
POA200-20-2 AC-DC Power Adaptor(5VDC, 2A)

Other Accessories

Item Item Name
BRK-USB-X USB I/O Unit Bracket for X series

Extended Warranty Service

Item Item Name
ESP-F5 Extended warranty service package (5 years service course) (Japan only)
ESP-S1 Extended warranty service package (Extension one year) (Japan only)
  • The optional bracket product, the BRK-USB-X is only fixable on the USB port side of COM-4CX-USB.

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