The JBX93079 40-meter LC/ST singlemode fiber patch cable represents a reliable solution for professional network installations requiring high-performance optical connectivity. This duplex configuration provides simultaneous bidirectional data transmission, making it ideal for telecommunications, data centers, and enterprise networking applications. Technical Excellence: Constructed with 9/125 micron G.657.A1 singlemode fiber, this cable operates efficiently across standard wavelengths with attenuation ratings of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm. The exceptionally low insertion loss (≤0.35dB typical at 0.15dB) and high return loss (≥20dB) ensure minimal signal degradation and maximum network performance over extended distances. Durability and Compliance: The 1.8mm diameter orange OFNR (Optical Fiber Non-conductive Riser) jacket provides superior fire resistance and is compliant with RoHS/ELV directives and EU directive 2002/95/EC. TAA compliance ensures eligibility for government contracts and procurement. All products undergo rigorous attenuation testing per ANSI/TIA/EIA-455-171-A standards. Applications: Perfect for connecting network switches, routers, patch panels, and fiber optic terminators in corporate offices, telecommunications facilities, and data center environments. The 40-meter length accommodates larger installations while maintaining signal integrity. Customization and Support: Custom lengths available to meet specific installation requirements. Includes 90-day limited warranty. Ships from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders exceeding $99. LC/UPC to ST/UPC connectors with Type A to B crossover configuration for seamless integration with existing duplex patch cord systems.