The JBX85091 represents a premium solution for demanding fiber optic networking applications requiring extended cable runs and reliable signal transmission. This 85-meter LC/ST duplex singlemode patch cable combines professional-grade engineering with practical design features that make it an excellent choice for telecommunications professionals and network administrators. **Technical Excellence** Built with 9/125 micron singlemode fiber and G.657.A1 glass composition, this cable delivers superior optical performance. The measured insertion loss of ≤0.35dB (0.15dB typical) and return loss of ≥20dB exceed industry standards, ensuring signal fidelity over extended distances. Attenuation specifications of 0.25 dB/km at 1310nm or 0.35 dB/km at 1550nm make this cable suitable for both legacy and modern fiber networks. **Design & Durability** The distinctive yellow OFNR (Optical Fiber Non-Conductive Riser) jacket provides easy visual identification in complex cable installations while meeting strict fire safety codes. The 1.8mm outside diameter offers excellent space efficiency in cable trays and conduits. LC/UPC to ST/UPC connectors with Type A to B crossover polarity ensure compatibility with standard duplex fiber installations. **Compliance & Standards** Fully RoHS/ELV compliant per EU directive 2002/95/EC, meeting ANSI/TIA/EIA-455-171-A-2001 attenuation standards. Manufacturing in the US, Taiwan, and China ensures consistent quality and availability. **Practical Advantages** Custom length options allow tailored solutions for unique installations. Free standard shipping on orders over $99 reduces overall project costs. The 90-day limited warranty provides peace of mind for your network investment. Ships from multiple US locations—Danville CA, Fort Worth TX, and Beaufort SC—ensuring faster delivery. **Ideal Applications** Perfect for data centers, telecommunications closets, campus networks, and long-distance fiber backbone connections. Whether upgrading legacy systems or deploying new infrastructure, this patch cable delivers the performance and reliability professionals demand.