The JBX86186 4-meter SC/ST duplex singlemode fiber patch cable represents the ideal solution for organizations requiring reliable, high-performance fiber optic connectivity. Built with precision-engineered 9/125 singlemode glass fiber (G.657.A1 grade), this cable is specifically designed to support long-distance, high-bandwidth data transmission in enterprise and telecommunications environments. Key Performance Features: This patch cable delivers exceptional optical performance with measured insertion loss of ≤0.35dB (typical 0.15dB) and return loss exceeding 20dB. Attenuation ratings of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm ensure minimal signal degradation over distance. Performance has been rigorously tested in accordance with ANSI/TIA/EIA-455-171-A-2001 standards, guaranteeing consistency and reliability. Connector Configuration: The SC/UPC to ST/UPC connector pairing with Type A to B crossover polarity provides the most common and versatile duplex configuration for modern network infrastructures. SC connectors offer superior performance and are preferred for single-mode applications, while ST connectors provide proven reliability in established network systems. Compliance & Safety: TAA (Trade Agreements Act) compliance makes this cable suitable for government procurement and sensitive projects. Full RoHS and ELV directive compliance ensures environmental responsibility and safety. The riser-rated (OFNR) PVC jacketing prevents flame propagation and smoke generation, meeting building codes for in-wall and plenum installations. Technical Specifications: - Length: 4 meters - Core/Cladding: 9/125 micrometers - Duplex Configuration: Two fiber strands - Outer Diameter: 1.8mm - Glass Fiber Grade: G.657.A1 - Connector Type: SC/UPC to ST/UPC - Polarity: Type A to B Crossover Applications: Ideal for enterprise data centers, telecommunications installations, academic networks, and any environment requiring certified, high-performance singlemode fiber connectivity. Custom lengths available for specialized installations. Convenience & Support: Free standard shipping on orders exceeding $99, with rapid fulfillment from distribution centers in California, Texas, and South Carolina. Backed by a comprehensive 90-day limited warranty for peace of mind.