The JBX42012 10-meter LC/APC to LC/UPC duplex fiber patch cable represents enterprise-grade connectivity for mission-critical network infrastructure. Built to exacting specifications, this cable combines superior optical performance with durability and compliance certifications required by government and institutional buyers. **Optical Performance:** Features a 9/125 single-mode fiber core conforming to G.657.A1 specifications, ensuring compatibility with legacy and modern network systems. The APC (Angled Physical Contact) connector on one end and UPC (Ultra Physical Contact) on the other enables the Type A to B crossover configuration most commonly deployed in duplex patch cord applications. Measured insertion loss of ≤0.35dB (typical 0.15dB) and return loss ≥20dB exceed industry standards for minimal signal degradation. Attenuation characteristics are verified at both 1310nm and 1550nm wavelengths per ANSI/TIA/EIA-455-171-A standards. **Construction & Durability:** The cable features a 1.8mm outside diameter plastic jacket rated OFNR (Optical Fiber Non-conductive Riser), meeting flame-resistance requirements for vertical pathways in commercial buildings. Two strands enable simultaneous bidirectional communication. The distinctive yellow jacket provides immediate visual identification in crowded fiber distribution frames. **Compliance & Certifications:** TAA (Trade Agreements Act) compliant, manufactured in Taiwan, US, or China locations. Meets RoHS/ELV directive 2002/95/EC requirements, eliminating hazardous substances. Backed by a 90-day limited warranty ensuring peace of mind with your investment. **Applications:** Ideal for telecommunications closets, data center backbone connections, FTTH deployments, and any environment requiring reliable single-mode fiber transmission. The crossover configuration makes this cable especially valuable for switches, routers, and optical line terminals where signal amplification or wavelength division multiplexing is essential. **Custom Options Available:** While this 10-meter length suits most standard installations, custom lengths accommodate specific deployment requirements. Standard packaging includes ten units per case, with free shipping on orders exceeding $99. Ships from multiple US locations for rapid delivery.