The JBX42208 85-meter LC/APC to FC/UPC duplex singlemode fiber patch cable represents a professional-grade solution for critical fiber optic connectivity in telecommunications, enterprise networks, and data center applications. **Technical Specifications:** This cable features a 9/125 singlemode fiber core constructed from G.657.A1 glass fiber, providing superior performance characteristics. With insertion loss of merely ≤0.35dB (0.15dB typical) and return loss exceeding 20dB, it meets or exceeds ANSI/TIA/EIA-455-171-A-2001 standards. Attenuation performance is optimized at both 1310nm (0.25dB/km) and 1550nm (0.35dB/km) wavelengths, making it suitable for diverse fiber optic applications. **Design and Construction:** The cable features a professional yellow jacket for easy identification and visual organization in complex cable installations. The 1.8mm outside diameter and OFNR riser rating ensure safe operation in commercial building environments while maintaining flexibility for routing through conduits and cable trays. Type A to B crossover polarity configuration is standard for duplex patch cord applications. **Compliance and Quality Assurance:** This product is TAA compliant and RoHS/ELV directive compliant, meeting government and enterprise procurement standards. The cable is manufactured to rigorous quality standards with testing performed in accordance with established industry specifications. **Practical Applications:** Ideal for connecting single-mode fiber terminals, network switches, and telecommunications equipment over extended 85-meter distances. Commonly used in telecommunications closets, inter-building connections, campus networks, and data center fiber backbone installations. **Shipping and Support:** Available with free standard shipping on orders exceeding $99, shipped from strategically located US warehouses (Danville CA, Fort Worth TX, and Beaufort SC) for rapid delivery. Custom lengths are available upon request. All products include a 90-day limited warranty for peace of mind.