The JBX42636 SC/APC to LC/UPC duplex singlemode fiber patch cable represents a professional-grade solution for critical network infrastructure requiring dependable performance and regulatory compliance. Manufactured with precision engineering, this 4-meter cable delivers exceptional signal integrity for telecommunications, data centers, and enterprise networking environments. Technical Excellence: Built with 9/125 singlemode fiber core and G.657.A1 glass specification, this cable achieves remarkable performance metrics. The insertion loss rating of ≤0.35dB (with a typical 0.15dB) ensures minimal signal degradation, while the ≥20dB return loss specification provides superior signal fidelity. These specifications are independently verified in accordance with ANSI/TIA/EIA-455-171-A-2001 industry standards, guaranteeing consistent performance across 1310nm and 1550nm wavelengths. Connector Technology: The SC/APC (angled physical contact) to LC/UPC (ultra-physical contact) configuration represents a Type A to B crossover polarity—the industry standard for duplex patch cords. This combination enables seamless integration with existing network infrastructure while maintaining optimal optical performance. Construction & Compliance: Featuring an OFNR riser-rated yellow jacket with 1.8mm outer diameter, this cable meets strict fire safety requirements for indoor installations. The bright yellow color coding facilitates network administration and troubleshooting. Full TAA compliance and RoHS/ELV certification ensure regulatory adherence for government and enterprise procurement requirements. Applications: Ideal for high-density data center interconnects, telecommunications equipment connections, campus networks, and any installation demanding single-mode fiber reliability. The duplex configuration supports bidirectional communication on a single cable, reducing installation complexity. Customization & Support: Available in custom lengths to accommodate specific installation requirements beyond the standard 4-meter offering. Backed by a 90-day limited warranty and backed by rapid shipping from multiple U.S. distribution centers (Danville CA, Fort Worth TX, Beaufort SC). With free standard shipping on orders over $99, the JBX42636 delivers professional-grade performance at compelling value.