The JBX42679 40-meter fiber patch cable represents enterprise-class connectivity engineered for critical telecommunications and data center applications. Featuring FC/APC to LC/UPC connectors in a duplex configuration, this cable provides the precise signal routing required for professional-grade optical networks. Key Technical Specifications: The 9/125 singlemode fiber core with G.657.A1 glass fiber delivers exceptional performance with minimal signal degradation. Insertion loss of ≤0.35dB (0.15dB typical) and return loss ≥20dB ensure reliable data transmission at both 1310nm and 1550nm wavelengths. The 1.8mm diameter jacketing allows easy routing through standard conduit systems while maintaining protection from environmental factors. Compliance and Quality: This cable meets all relevant industry standards, including ANSI/TIA/EIA-455-171-A-2001 attenuation testing protocols. TAA compliance makes it suitable for government and regulated facility installations. RoHS/ELV certification confirms environmental responsibility, while OFNR riser-rated jacketing ensures safe deployment in commercial buildings without compromising fire safety codes. Applications and Use Cases: Ideal for telecommunications networks, data center interconnections, enterprise LANs, and professional audio/visual installations requiring single-mode optical transmission. The 40-meter length accommodates standard building layouts while the duplex configuration supports bidirectional communication on a single cable run. Customization and Support: Custom lengths are available to accommodate specific installation requirements. The cable ships from multiple U.S. locations (California, Texas, and South Carolina) for rapid delivery. Backed by a 90-day limited warranty and eligible for free standard shipping on qualifying orders, this patch cable provides reliable connectivity backed by responsive customer service.