The JBX42640 SC/APC to LC/UPC duplex singlemode fiber patch cable represents a professional-grade solution for telecommunications and data center environments requiring dependable optical signal transmission. This 8-meter cable combines industry-leading connector technology with superior glass fiber construction to deliver consistent performance in demanding network applications. Key Technical Specifications: The cable features a 9/125 singlemode core with G.657.A1 glass fiber composition, engineered for low-loss signal propagation. Insertion loss measurements of ≤0.35dB (0.15dB typical) ensure minimal signal degradation, while return loss specifications of ≥20dB provide excellent connector quality. Attenuation performance meets strict standards: 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm wavelengths. Connector Configuration: The SC/APC to LC/UPC connector arrangement with Type A to B crossover polarity represents the most common duplex patch cord configuration, enabling seamless integration into existing network infrastructure. The duplex design supports bidirectional data transmission through a single cable assembly. Compliance and Safety: TAA compliance ensures eligibility for government procurement, while RoHS/ELV certification demonstrates environmental responsibility. The OFNR (Optical Fiber Non-conductive Riser) jacket rating permits installation in vertical cable runs and plenum spaces without fire suppression concerns. Design Features: The durable 1.8mm outside diameter yellow jacket provides visibility in cable management systems while protecting the fiber strands from physical damage. Compact 5.0 x 5.0 x 0.2 inch packaging facilitates storage and deployment. Flexibility and Support: Custom length options accommodate non-standard installation requirements. The 90-day limited warranty provides buyer confidence, while multiple U.S. distribution points (California, Texas, South Carolina) enable rapid fulfillment. Applications: Ideal for fiber-to-the-desktop installations, network upgrades, and telecommunications equipment connections requiring precision optical coupling.