Black Box EFN310-003M-SCLC

Overview

The Black Box EFN310-003M-SCLC is a fiber optic patch cable designed for high-quality, long-distance data transmission. This single-mode OS2 cable spans 3 meters (9.8 feet) and is ideal for environments where maintaining signal integrity over extended distances is essential. Featuring compact LC and SC connectors, it fits well in tight spaces such as desktop setups or crowded network racks, while its ceramic ferrules ensure stable connections with minimal signal loss.

With low insertion loss and high return loss, this cable supports clear and uninterrupted data flow, making it suitable for data centers, telecommunications, and other professional network applications. Its OFNR riser certification allows safe installation in vertical building runs, and it performs reliably across a wide temperature range, ensuring consistent operation in various conditions.

Key features

• Single-mode OS2 fiber designed for long-distance data transmission with minimal signal degradation
• Compact LC and SC connectors that save space and fit into tight network environments
• Ceramic ferrules provide stable and secure connections to reduce signal loss
• Low insertion loss of approximately 0.2 dB ensures efficient signal transfer
• High return loss of 55 dB typical to control signal reflections and maintain data integrity
• Certified OFNR riser cable suitable for safe vertical installation within buildings
• Operates effectively in temperatures ranging from -4 to 158 degrees Fahrenheit for versatile deployment
• Supports wavelengths of 1310 nm and 1550 nm, allowing flexible use across different network setups

Key specs

• Fiber type: 9/125 µm OS2 single-mode
• Cable length: 3 meters (9.8 feet)
• Connectors: LC to SC
• Insertion loss: typical 0.2 dB
• Return loss: typical 55 dB
• Operating temperature: -4 to 158 °F (-20 to 70 °C)
• Cable rating: OFNR riser
• Supported wavelengths: 1310 nm and 1550 nm

Connectivity and compatibility

This fiber optic patch cable is compatible with devices and network equipment that support LC and SC connectors, commonly found in data centers, telecommunications infrastructure, and enterprise networks. Its single-mode OS2 fiber is optimized for long-distance connections, making it a strong choice for linking switches, routers, and optical transceivers where signal quality and distance are critical.

The cable’s compact connectors and flexible length make it suitable for both desktop and rack-mounted setups, fitting neatly into crowded spaces without compromising performance.

Ideal uses and environments

The EFN310-003M-SCLC cable is well suited to professional environments requiring reliable fiber optic connections over moderate distances. It works effectively in data centers, telecom rooms, and office buildings where vertical cable runs are common and safety standards must be met. Its temperature tolerance and riser certification also make it a dependable option for installations that face varying environmental conditions.

This cable is a practical choice for network administrators and IT professionals upgrading infrastructure or establishing new fiber links that demand consistent, high-speed data transmission with minimal signal loss.

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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