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I-O 4440 Twinax & Coax
Barcode Printer Interface for Parallel & Serial Printers


I-O 8220 Test TextTwinax/Coax Connectivity for Parallel or Serial Interface Barcode Label Printers

PLEASE NOTE:  The I-O Corporation 4440 Twinax and Coax Printer Interfaces are no longer manufactured.  Our available replacement option for the 4440 is the  Praim PR165e Twinax-to-Parallel Printer Interface.  Click here to be taken to the PR165e page.  The direct replacement for the 4440-CXP Coax-to-Parallel printer interface is the Axis AX-7 Cobra.  Please click here to be taken to the AX-7 Coax Printer Interface page.


The I-O 4440 Bar Code Interface is the ideal Twinax/Coax connectivity solution for bar code label printers such as Zebra, Eltron, Genicom, Monarch, Sato, Datamax, Intermec as well as other bar code and specialty printers. 

Due to its unique support of proprietary label printer languages the I-O 4440 is extremely easy to set up an offers unsurpassed communication with the attached printer. (Click on picture for hardware specifications)

If you need to directly attach your bar code or specialty printer to an IBM iSeries AS/400 or zSeries S390 over a TCP/IP connection, click here for the I-O 5430B / 5431B TCP/IP Ethernet Print Server Interface.


  • Standard connectors allow the attachment of virtually any parallel or serial bar code label printer to an IBM AS/400, S/3X, or 3270-type mainframe host, or to a controller. (See below for specific model numbers)

  • Interface settings are preconfigured for use with bar code label printers making installation a snap.

  • Support of proprietary label printer languages permits user-friendly customization, diagnostics, and trouble-shooting.

  • Compact design turns any attached printer into a seamless, stand-alone Twinax/Coax printer.

  • Programmable EBCDIC/ASCII translation tables ensure compatibility with any existing application.

  • Reliable IBM printer emulations and I-O quality guarantee lasting, hassle-free operation in even the most demanding printing environments.

  • For direct attachment to your AS/400 over TCP/IP Ethernet, click here for the I-O 5430B & 5431B TCP/IP BarCode Print Servers.

Click here for more information on the I-O 4440 Bar Code Printer Interfaces

Ordering Information


Item Number

Host Connection / 
Bar Code Printer Interface



Attaches a Parallel Printer to a 5250 Twinax Host

Call us at
for availability

Attaches a Serial Printer to a 5250 Twinax Host

$  559.00

Attaches a Parallel Printer to a 3270 Coax Host

Call us at
for availability

Attaches a Serial Printer to a 3270 Coax Host

$  559.00

Additional Features



Reliable IBM
Printer Emulations

Experience worry-free host printing with I-O’s reliable IBM 4214, 5224/25/56 and 3287/68/62 printer emulations.

Preconfigured Settings

Quickly and easily install the I-O 4440. Its factory defaults are already set for bar code label printing.

Unique Support of Proprietary Label Printer Languages

Print self-tests, diagnostics, dumps, etc. directly to the attached label printer for convenient customization and trouble-shooting.

Programmable EBCDIC/ASCII Translation Tables

Customize the I-O 4440 to work with any existing application.

Dependable Performance

Increase productivity by avoiding printer downtime.

Field-Proven I-O Command

Access any printer function directly from the host in Command
Pass-Thru™ mode.

Internal Power Supply

Save space by utilizing the printer’s capability to supply power through its parallel or serial connector.

Compact Design

Gain flexibility by turning your bar code label printer into a seamless, stand- alone Twinax/coax printer.

Hardware Specifications



Host Systems

Twinax (5250) or Coax (3270)


IBM Twinax (TX) or Coax (CX) to parallel (P) or RS-232 serial (S)


Supplied by the printer or through 5V wall mount transformer


Temperature: +40░ to 110░ F (+5 to 42░ C)
Relative humidity: 20% to 85%
Optimum: 70░ +/- 15░ F (24░ +/- 8░ C)


FCC A; CE 55022

Information Request Form - Click Here

4440 Barcode Printer Interface



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