Fiber Optic Switches from Electro Standards Laboratories

6-Way Fiber Switch / Converter -- Model 4191

6-Way Fiber Switch / Converter -- Model 4191 -- View Larger Image
6-Way Fiber Switch / Converter -- Model 4191-Image


    • Ports 1-6 are 100 Base FX fiber optic ST duplex ports.
    • COMMON port is RJ45 10/100Base-T.
  • FIBER OPTIC INTERFACE: Wavelength 1300nm, speed 100 Mbps, multimode fiber, full duplex transmission.
    • (6) pushbuttons 1-6 to select network port.
    • Pushbuttons 7-8 for field expansion. (No REMOTE Control port)
    • (6) Status red LED's
    • (6) Link red LED's
    • (2) Status red
    • (2) Link red for field expansion
  • POWER: UL approved 100/240VAC, 50/60Hz table mount power module supplies power to the unit, P/N 522586.
  • DIMENSIONS: 11.32" W x 3.0" H x 9.34" D,(28.8 x 7.7 x 23.8 cm)
  • WEIGHT: Approximately 3.5 lbs. (1.6 kg)

QuickSwitch® 4191 ST Duplex Fiber Optic Switch/Converter allows the user the capability of sharing any one of six single port interface devices via ports 1, 2, 3, 4, 5, or 6 from a workstation or device, connected to the COMMON port. The QuickSwitch® 4191 is packaged in a slim desktop style enclosure.
All six of the fiber optic ports are 1300nm, 100 Mbps, ST Duplex Multimode ports. The built-in electronics will automatically convert the COMMON port to 10/100Base-T twisted pair media. The switch is controlled manually via front panel pushbuttons. The switch position status and fiber optic link presence can be determined b the front panel LED's. The QuickSwitch® 4191 is fully compliant with the 802.3u 100Base-FX standard.
QuickSwitch® 4191 Fiber Optic Network Switch / Converter Features:

  • Front panel pushbutton control.
  • When power is lost, unit isolates all communication ports and does not pass data.
  • When power is restored, the unit automatically switches to the last known position.
  • Front panel LED's display present Status and Link.
  • The Common Port is a 10/100Base TX Fast Ethernet port. The 10/100 Base TX "COMMON" port will convert and pass data to and from the selected fiber port.
  • All fiber optic ports are ST Duplex connectors, Multimode, 62.5/125 micron, and support a wavelength of 1300nm and speeds of 100 Mbps.
  • All fiber ports are standard fiber optic transceivers that receive and drive the fiber optic signal, where the TX is on the left and the RX is on the right.
  • Model 4191 is field expandable to become an 8-Way unit (Model 4193) by adding fiber modules.


Product Category
Fiber Optic Switches
Cable Type
Connector Type
ST; RJ45
Wavelength Range
1300 nm (13000 Å)
Data Rate
0.1000 Gbps
Switch Features
Package Type
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