Black Box LGC135A-R3

Overview

The Black Box LGC135A-R3 is a mini media converter designed to bridge copper Ethernet networks to gigabit fiber connections. It supports 10, 100, and 1000 Mbps speeds on the RJ45 port and converts these signals to a 1000 Mbps fiber link, enabling network extension beyond the typical 100-meter copper cable limit. This compact unit is ideal for extending network reach in environments where fiber is preferred for its distance and interference immunity.

Key features

• Supports multiple Ethernet speeds (10/100/1000 Mbps) for versatile network compatibility
• Works with industry-standard SFP modules, allowing selection of multimode or single-mode fiber to match distance and environment needs
• Compact and slim design fits easily on desktops, inside control cabinets, or near point-of-sale terminals without occupying much space
• Offers flexible power options including an external AC adapter, optional USB power cable for field use, and compatibility with rack-mounted PowerTray systems for high-density setups
• Auto MDI/MDI-X feature removes the need for crossover cables, simplifying installation and reducing cable requirements

Key specs

• Ethernet port speeds: 10, 100, and 1000 Mbps
• Fiber link speed: 1000 Mbps
• Compatible fiber types: multimode and single-mode via SFP modules
• Maximum fiber distance: up to 80 kilometers with single-mode SFP
• Dimensions: 0.8 inches high × 1.8 inches wide × 3.4 inches deep
• Power options: external AC adapter, optional USB power cable, rack-mountable PowerTray

Connectivity and compatibility

This media converter connects a standard RJ45 Ethernet port to a fiber optic network using SFP transceivers. The use of SFP modules means you can tailor the fiber connection to your specific needs, whether short-range multimode or long-range single-mode fiber. The auto MDI/MDI-X feature ensures compatibility with any standard Ethernet cable, eliminating concerns about cable type during setup.

Installation and setup

Installation is straightforward and requires no special configuration. Simply insert the appropriate SFP module, connect the copper and fiber cables, and power the unit using one of the available options. The plug-and-play design makes it suitable for quick deployment in various environments, from office networks to industrial settings.

Ideal uses and environments

This converter is well suited for network administrators and IT professionals who need to extend Ethernet networks beyond copper limitations without adding complexity. It fits well in education, healthcare, retail, and industrial environments where reliable, high-speed fiber connections are necessary. Its compact size and flexible power options also make it a strong choice for fieldwork and dense rack installations.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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