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Async USB to RS-232 interface converter USB to DB9 2 port

The USB to RS232 converter allows you to connect two non-USB RS232 DB9 device to your USB bus.


4 In Stock
Same Day Shipping (before 5PM ET)
Extended Double Diamond™ Warranty Available (3 Additional Year)

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Product Features

  • Use your new computer with older workhorse devices.
  • Provide 3000-VDC optical isolation between ports.
  • RoHS compliant.
  • Powered from the USB interface.
  • Automatic configuration on Windows® 98/Me/XP, Windows 2000, and Windows Vista™.


  • Mount to a DIN rail.
  • LEDs indicate transmit and receive data.
  • Include 1-meter (3.2-ft.) USB cable.
  • Perfect for point-of-sale, medical, SCADA, and factory-automation applications.

    USB 2.0↔Single- and Dual-Port RS-232 DIN Rail Converters
  • Increase your PC's capability by adding one or two COM ports.
  • Provide 15-kV ESD surge protection against spikes and ground loops.
  • Data rates up to 12 Mbps for USB and 460.8 kbps for RS-232.
  • Use all RS-232 handshaking.

  • USB 2.0↔Single- and Dual-Port RS-422/RS-485 DIN Rail Converters
  • Increase your PC's capability by adding one or two COM ports.
  • Include one or two pluggable terminal blocks.
  • Use on 2-wire RS-485 or 4-wire RS-422/RS-485 networks.
  • Data rates up to 12 Mbps for USB and 921.6 kbps for RS-422/RS-485.
  • Support Send Data Control, TDA, TDB, RDA, RDB, and GND.

  • Tech Specs

    CE Approval Yes
    Connectors All: (1) USB Type B F; ICD110A-ICD111A: RS-232: (1) or (2) DB9 M; ICD112A-ICD113A: RS-422/RS-485: (1) or (2) pluggable terminal blocks
    Dimensions 4.9"H x 1.6"W x 3.3"D (12.4 x 4.1 x 8.4 cm)
    Isolation and Surge Protection Isolation: 3000-VDC optical isolation between ports; ICD110A-ICD111A also provide 15-kV ESD surge protection
    MTBF 118,048 hours
    Operating Systems Supported Windows® 98/Me/XP, Windows 2000, and Windows Vista™
    Operating Temperature 32 to 158° F (0 to 70° C)
    Power From the USB interface
    Speed USB: 12 Mbps; RS-232: ICD110A-ICD111A: 460.8 kbps; RS-422/RS-485: ICD112A-ICD113A: 921.6 kbps
    This product works with:

    These products work with:
  • DB9 Male/Female Cable (BC00200, etc.)
  • Individually Shielded Low-Capacitance Cable–Extra Distance (ERN04A, etc.)
  • DIN Rail (DR100)
  • Questions? Contact our FREE Tech Support.

    * Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.



    Double Diamond Warranty

    Extended 1 Year Warranty Available

    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $16.50

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $32.99


    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    The Async USB to RS-232 interface converter USB to DB9 2 port comes with a standard 1 Year Double Diamond™ Warranty (Standard) already included.

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

    Plus, get an Extended Double Diamond Warranty.

    You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

    * Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

    What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.