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Switch/Converter Catalog # 303189 - Model 4189 4-Way Fiber

    Switch/Converter Catalog # 303189 - Model 4189 4-Way FiberSwitch/Converter Catalog # 303189 - Model 4189 4-Way Fiber
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    • Switch/Converter Catalog # 303189 - Model 4189 4-Way Fiber
    • Switch/Converter Catalog # 303189 - Model 4189 4-Way Fiber
Base Price:
Catalog No: 303189
Model No: 4189
Feature:No Optical Loss
Product Type:Switches: Copper, Switches: Fiber Optic
Cable Type/Port Connector:RJ45, ST
Channels per Switch Chassis:4
Electronic Switches/Power Required:QuickSwitch® Fiber Optic
Fiber Mode:Multimode
Fiber Size:62.5/125
Fiber Type:Duplex
Local Control:Pushbutton
Mirror Technology:OEO
Speed:10 & 100 Mbps
Wavelength Nano:850 & 1300


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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QuickSwitch® Fiber Optic Network Switch / Converter
QuickSwitch® 4189 4-Way Fiber Optic Switch / Converter

4-Way Fiber Optic ST Duplex Switch Converter, QuickSwitch 4189


  • PORT CONNECTORS: Ports 1, 2 are 10 Base FL fiber optic ports, dual ST; ports 3, 4 are 100 Base FX fiber optic ST duplex ports; COMMON port is 10/100 Base-TX, RJ45.
  • FRONT PANEL CONTROLS: (4) Pushbuttons to select network port. (No REMOTE Control port)
  • DISPLAY: (4) Status red LED's; (4) Link red LED's.
  • POWER: UL approved 110-240VAC / 47-63Hz wall mount power module
    supplies power to the unit, P/N 520943
  • FIBER OPTIC PORT INTERFACE: Ports 1, 2 are 850 nm, speed 10 Mbps, full duplex; Ports 3, 4 are 1300 nm, speed 100 Mbps, full duplex.
  • FIBER SIZE: 62.5/125 micron
  • DIMENSIONS: 11" W x 2.7" H x 8.5" D. [27.9 x 6.9 x 21.6 cm]
  • WEIGHT: 3 lbs. [1.4 kg]

MODEL 4189 FIBER OPTIC 1/2/3/4 SWITCH CONVERTER FUNCTIONAL DIAGRAM:  Fiber Optic 4-Way Switch Converter diagram shows ports 1 and 2 as ST Duplex fiber optic, 850 nm / 10FX; ports 3 and 4 are ST Duplex fiber optic, 1300 nm, 100BaseFX. The built-in electronics will automatically convert the COMMON port to 10Base-T or 100Base-T twisted pair media depending on the port selected.

4-Way Fiber Optic Switch Converter, QuickSwitch 4189, Functional Block Diagram

QuickSwitch® 4189 4-Way Fiber Optic Switch/Converter allows use to access any one of four separate fiber optic network ports 1, 2, 3, or 4, from a computer connected to the COMMON 100Base-TX port.  The fiber optic / twisted pair media conversion is built-in! Ports 1 and 2 are 850 nm and 10 Mbps ST Duplex Multimode fiber optic ports; ports 3 and 4 are 1300 nm 100 Mbps ST Duplex Multimode fiber optic ports.  Customized configurations are available.  The selected fiber optic network port is converted to either 10 Base-T or 100 Base-T depending on the selected fiber optic port speed.

QuickSwitch® 4189 is controlled from the front panel pushbutton switches only.  Front panel control is as simple as depressing the button of the desired network port.  LED indicators display the switch position status, as well as the presence of the fiber optic link.


  • Access any one of four separate fiber optic networks from one computer
  • Network ports 1 & 2 are 850nm 10 Mbps ST duplex multimode fiber optic ports. Network ports 3 & 4 are 1300nm 100 Mbps ST duplex multimode fiber optic ports. ST duplex shown. SC is available.
  • Based on the selected port, the COMMON port will automatically convert to the proper 10 BASE-T or 100 BASE-T speed.
  • Internal circuitry insures isolation between networks/devices
  • Acts as a signal source, no optical signal loss
  • LED display indicates switch position and fiber link presence at a glance. 
  • Simple pushbutton switching eliminates the need to plug/unplug fiber optic patchcords thus minimizing connector wear, and increasing system reliability.
  • Spare power supply available, P/N 520943.
  • Other fiber optic interface network ports are available.
  • Municipalities, schools, government: This product is on GSA Schedule!
  • This high-quality network switch is available to city, state, and federal government purchasers at a discounted price and favorable payment and shipping terms via GSA Schedule GS-35F-0286V. Click here for GSA Terms. 

To view the article: "HOW TO DETERMINE THE RIGHT FIBER OPTIC NETWORK BACKUP SWITCH FOR YOUR APPLICATION", click link to read as a pdf. You need Acrobat Reader to view this file.

Electro Standards can supply all of your Fiber Optic Cable requirements. Please click here to reach our Fiber Optic Cable Webpage.

QuickSwitch® is a registered trademark of Electro Standards Laboratories.

QuickSwitch® Fiber Optic Switches are available in many configurations: auto fallback, switch/converters, multimode & single mode, and secure off-line positions. Check out our complete line of QuickSwitch® fiber optic switches.

For custom fiber optic network switches contact our friendly sales support staff at 401-943-1164; or email:eslab@electrostandards.com, or complete our Online Custom Fiber Opatic Switch Form.

All ESL products are available for export.

All data switch boxes, 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.

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