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Fiber Optic A/B/C/D Switch Latching with ST multimode connectors desktop

The switch operates using a unique all-optical micro-mirror, eliminating the complexity and vulnerabilities of electronic fiber switches.


Limited Quantity In Stock
Typically Ships within One Week
Extended Double Diamond™ Warranty Available (3 Additional Year)

*Required field

Product Features

  • The micro-mirrors on these full-duplex fiber switches optically transmit data port to port.
  • No optical-to-electrical conversion between fiber connections. Instead, the switches use internal mirrors to optically move data between ports—technology that's trusted and time tested!


  • For reliable switching in mission-critical environments, the micro-mirrors are bonded to precise positioning servos.
  • Ideal for government, healthcare, financial, or other applications where a private, data-sensitive network connects to a publicly accessible network.
  • Enable you to connect a single workstation to two or more networks or remote devices.
  • The latching switch latches mirror movement mechanically into a selected position and holds it there without the need for continuous electrical power.
  • The non-latching version falls back to C-to-A position if power is lost.
  • Operate transparently to signal rates, formats, and wavelengths, and don't require an upgrade when your data protocols change or speeds increase.
  • Work with 62.5-/125-micron multimode.
  • Universal 100–240-VAC power supply.
  • There's a reason why these types of manual switches continue to be the switches of choice for networking professionals everywhere: The tried-and-true optical switches perform as promised year after year.

    They're reliable because they use micro-mirrors instead of electronics to route data signals from one fiber optic port to the next. And unlike conventional electronic switches, there are no complex and vulnerable electronic circuits to monitor and protect from intrusion, component failure, or interference.

    The switches are available in latching and non-latching models. The optical mirror movement on the latching version maintains the selected position even when there's a power failure.

    Tech Specs

    CE Approval Yes
    Compatibility 62.5-/125-micron multimode fiber
    Connectors Fiber ports: (5) pairs of ST; Power: (1) 3.5-mm input
    Crosstalk -45 dB (typical) per FOTP-42
    MTBF 100,000 hours or 1,000,000 cycles
    Optical Loss 0.5 dB (typical) at 1300 nm per FOTP-34 method B
    Power Input: 100-240 VAC, 50-60 Hz, autosensing; Output: 5 VDC
    Sensitivity 750 to 1440 nanometers
    Size 2.5"H x 8"W x 6.3"D (6.4 x 20.3 x 16 cm)
    Switching Speed Typical: 5 msec; Maximum: 10 msec
    Weight 4 lb. (1.8 kg)

    * 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: $169.50

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $338.99


    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 Fiber Optic A/B/C/D Switch Latching with ST MM connectors desktop 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.