Black Box 1-800-316-7107 


Helping you is our priority at Black Box.

We're committed to providing the best customer service in the industry. We're here for you, 24/7, 365.

We'll call you

A technical expert will call you shortly.

Submit Connecting call...

Call Us

Customer Sales & Service Support

Black Box Brand Product Support

IT Services & Voice Support

Send us a FAX


Fiber Optic A/B Switch Latching, 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 this full-duplex fiber switch optically transmits data port to port.
  • No optical-to-electrical conversion between fiber connections. Instead, the switch uses internal mirrors to optically move data between ports—technology that's trusted and time tested!


  • Simple to use. To route signals, just turn a knob on the front panel.
  • Ideal for government, healthcare, financial, or other applications where a private, data-sensitive network connects to a publicly accessible network.
  • For reliable switching in mission-critical environments, the micro-mirrors are bonded to precise positioning servos.
  • Enables you to connect a single workstation to two or more networks or remote devices.
  • Latching switches latch mirror movement mechanically into a selected position and hold it there without the need for continuous electrical power.
  • All non-latching versions except for the SW1003A fall back to C-to-A position if power is lost (the SW1003A falls back to the OFF position).
  • The OFF position on the SW1003A also prevents host-to-remote device communications.
  • Models with loopback enable you to test an idle fiber link from a central office to ensure that the circuit is operating correctly.
  • 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 this type of manual switch continues to be the switch of choice for networking professionals everywhere: The tried-and-true optical switches perform as promised year after year.

    It's reliable because it uses micro-mirrors instead of electronics to route data signals from one fiber optic port to the next. And unlike conventional electronic switches, it is not complex and vulnerable electronic circuits to monitor and protect from intrusion, component failure, or interference.

    The switch is available in latching and non-latching models. The optical mirror movement on the latching versions maintain the selected position even when there's a power failure.

    You can also order an A/B switch with unique loopback capabilities. Using loopbacks, you can verify the integrity of your backup fiber link while still connected to your primary fiber link. This is especially useful in failover applications where you want to continuously test the "unused" circuit to ensure that it's available if needed.

    Tech Specs

    CE Approval Yes
    Compatibility 62.5-/125-micron multimode fiber
    Connectors Fiber ports: (3) pairs of ST®; Power: (1) 3.5-mm input
    Crosstalk -45 dB (typical) per FOTP-42
    Dimensions 2.5"H x 8"W x 6.3"D (6.4 x 20.3 x 16 cm)
    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
    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: $121.36

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $242.71


    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 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.