401-943-1164 / US & Canada Toll Free: 877-943-1164

304129 - Model 4129 POF to RS485 Converter Links Controllers to Kiosks / Machinery / Terminals

    RS485 Interface ConverterRS485 Interface ConverterRS485 Interface ConverterRS485 Interface ConverterRS485 Interface Converter
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    • RS485 Interface Converter
    • RS485 Interface Converter
    • RS485 Interface Converter
    • RS485 Interface Converter
    • RS485 Interface Converter
Base Price:
Catalog No: 304129
Model No: 4129
Product Type:Interface Converter
Converter Port Connector:POF, Plastic/Versatile Link, RJ45
Conversion Type:POF/Plastic/Polymer Fiber, RS485
Speed:>20 Kbps
Wavelength Nano:660 nm (red)


Shipping Terms

Shipments are made via UPS Ground, unless otherwise specified. Freight charges are prepaid and added to your invoice. We can estimate the freight costs for you.

We can ship freight collect on your account, just provide your UPS Account Number.

We can also ship via the carrier of your choice. Provide the details and your account number.

Products shall be shipped F.O.B. Electro Standards' facility. Title to and risk of loss or damage to the products shall pass to you upon Electro Standards delivery of the products to a carrier for shipment. Title to software will remain with the applicable licensor. Electro Standards' prices do not include shipping and handling charges. Electro Standards reserves the right to use its own discretion in the manner and routing of shipments. Electro Standards shall be permitted to deliver products in separate lots.

Shipping Return Policy

  • To return an item, contact Electro Standards at 401-943-1164 to obtain a Return Material Authorization (RMA) number. RMA numbers are valid for 30 days after the date of the shipment and cannot be extended or re-issued. We are unable to accept returns without an RMA number.
  • All returns except those of defective product are subject to a 15% restocking fee, and additional charges for handling or freight are refunded only in cases of defective products.
  • Return freight must be shipped prepaid. We recommend that you insure the package as you are responsible for risk of loss on all returned packages. We recommend that all cartons are properly packed as Electro Standards is not responsible for product damaged en route. We do not issue call tags for product returns.
  • Returned product must be clean, undamaged, and complete with all manuals, accessories, documents and packaging. The items must be in a resalable condition.
  • The product must have with it a copy of the original invoice or packing slip and the appropriate RMA paperwork.
  • If your item is not working properly, please contact Electro Standards at 401-943-1164 for help in trouble-shooting your application.
  • If the product is defective, Electro Standards will repair or replace that item (at our discretion) upon receipt and evaluation of the original product.
  • Electro Standards reserves the right to authorize product returns after 30 days from the invoice date in some cases. If the product is accepted after 30 days, credit will be issued toward future pruchases only and some additional restocking charges may be applied.
  • All credits from RMAs must be used within one calendar year of issue.

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FiberĀ® 485

Fiber 485® Model 4129 HP Versalink Fiber to RS485 Interface Converter

  • Allow Connection of HP Fiber Optic Linked Terminals to RS485 Port of Controller

  • Provides Electrical-to-Optical, Optical to Electrical Conversion

  • Ideal for Casino Networks linking Video Lottery Terminals & Video Gaming Machines.

  • Facilitates Casino Gaming Expansion Network Installation.

 Fiber® 485 Converters Specifications:

  • Fiber Transmission Distance: 75m (250 ft.) using TC 1000 W type plastic fiber cable.
  • RS485/422 Transmission Distance: Greater than 300 m (1000 ft.).
  • Optical Fiber Connectors: HP/Agilent Versatile Link
    • RS485/RS422 Connector: RJ45 Female on Model 4129.
  • Optical Cable Type: 1mm plastic optical film.
  • Optical Wavelength: 660 nm (red).
  • External Power Supply: 120 VAC, 60 Hz wall mount power supply is included with each unit (Cat No 533973).
  • Dimensions: 2.25" x 1.10" x 3.55" (5.8 x 2.8 x 9.1cm).
  • Weight: 0.5 lb. (226 grams).
  • Status Display: Red LED.

The Model 4129 Versalink (POF) Fiber to RS485/RS422 Interface Converter provides the user with an elegant solution to connecting a fiber optic network of terminals to a controller with an RS485/RS422 interface port.  While RS485 is a versatile communication standard, able to communicate over long distances and at fast data rates, conversion to a fiber optic communication standard also allows data transmission that is no longer susceptible to electrostatic or electromagnetic fields.  Additionally, the ports of the connected terminals are protected from damage by potential differences (ground variations) that often exist between them.


The illustration shows a Controller connected to the Model 4129 RJ45 port and Video Gaming Machines linked to the HP/Agilent Versatile Link connectors via HP Versatile Link Plastic Core Cables.

RS485 POF to RS485 Application drawing

Fiber® 485 Converter Features:

  • RS485/RS422 connection via a RJ45 connector.
  • ESL's Media Converters convert RS485/RS422 Serial Communication Interface to HP Versatile Link plastic core cable.
  • Copper interface features ESD and Transient Voltage protection.
  • ESL's Fiber Optic Interface Converters provide full galvanic isolation (no metallic connection) between connected devices.
  • Full duplex connection between HP Versatile Link fiber optic interface device or network and an RS485 interface device.
  • Allows the interference-free fiber optical transfer of data to be utilized by the device having an RS485/RS422 interface.
  • Data transfer rate up to 1 Mbps.
  • Fiber connections via two standard Versatile Link connectors.
  • Configurable for use at DCE or DTE (specify with order).
  • Maximum Link Distance: greater than 500 meters (1640 feet) with 2.00 mm Hard Clad Silicon fiber cable.
  • Provided with external wall-mount power supply, UL approved. 

This spec sheet is also translated into Cantonese. To view Models 4127/4129 specifications translated into Cantonese click here.

To view more of Electro Standards Fiber to RS422 Converters, click here: Fiber Optic Interface Converters.

RS485 / 422 Signals
 Model 4127  Model 4129  Signal  Signal Direction

 DB15 Pin#

 RJ45 Pin#
 4  4  RX  ← IN
 11  6  RX-  ← IN
 2  1  TX  → OUT
 9  7  TX-  → OUT
 7  5  REF/GND  

Model 4127 (Cat No 304128) HP Versatile Link Fiber to RS-485 Interface Converter via a DB-15 connector.

Please check out our HP Versalink Plastic Core Cables.

Please check out our HP Versalink Plastic Core Cables and Interface Converters on our Related products tab.
 10 FEET  986625-010
 20 FEET  986625-020
 30 FEET  986625-030
 40 FEET  986625-040
 Custom length HP Fiber Cables Available
 Order: Catalog Number 986625 - Length (in feet)

Electro Standards can supply all your Network Cable requirements. Click here to reach our CABLES, COPPER NETWORK Webpage.

For custom network interface converters call our friendly customer support staff at 401-943-1164, email eslab@electrostandards.com, or complete our online custom product request form.

All data switches, data communication products, and data acquisition products are subject to a one year warranty against manufacturing defects.  The limit of ESL liability is limited to the cost of the ESL product provided.

*Prices online are subject to change and verification.

All ESL products are available for export.

Electro Standards welcomes International inquiries: commutateur d'ordinateur,  equipo interruptor, interruttore del calcolatore, interruptor do computador, dator switch


Available Combo Deals