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


10/100 TO 100BASE-SX MODULE, 850NM, 300M, ST

Extend a copper 10/100 network up to 300 meters over fiber!

Price: $309.05

Sold As is with no warranty.

Product Features

  • Converts 10- or 100-Mbps copper to 100-Mbps multimode fiber operating at 850-nm wavelength.
  • Enables you to extend a network in areas with electrical interference.
  • Installs in our High-Density Media Converter System II Chassis.
  • LinkLoss™ notifies you of "silent failures" on the copper-to-fiber links.
  • Details

    This Layer 1 module for the High-Density Media Converter System II belongs to a large family of modular media converter and communications options for your managed enterprise network. With many modules to choose from, this system can adapt to even the most demanding network configurations.

    The modular media converters for the High-Density Media Converter System II convert the incoming electrical signal from one cable type and then transmit it over another type. Bridging the gap between two different Ethernet types, the media converters are totally transparent to network operation, having no effect on the data being sent across the link. What's more, all of the modules are hot-swappable—you never need to power down a chassis to change a module.

    The High-Density Media Converter System II 10BASE-T/100BASE-TX to 100BASE-SX Layer 1 Module featured here has an autosensing 10-/100-Mbps copper port and a 100-Mbps multimode fiber port. It's a good choice for remote Fast Ethernet connections to Ethernet devices that may later be upgraded to Fast Ethernet. Use multiple converters to increase your fiber reach throughout your enterprise—up to 300 meters (984 ft.), in fact.

    The module includes a LinkLoss™ feature, which notifies you of "silent failures" on copper-to-fiber links. LinkLoss enables you to troubleshoot network problems just by looking at the media converter's Link LED—the link status of the fiber segment will always be reflected by the twisted-pair segment so you're informed quickly of fiber problems.

    Tech Specs

    This product works with:
  • High-Density Media Converter System II Chassis (LMC5203A–LMC5206A)
  • Questions? Contact our FREE Tech Support.

    NOTE: 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 Sold As is with no warranty. Diamond

    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.

    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.