The JBX85071 6-meter LC/ST duplex singlemode fiber patch cable is a professional-grade connectivity solution designed for mission-critical network infrastructure. Built with precision engineering and quality materials, this cable delivers reliable signal transmission in single-mode fiber networks. **Technical Specifications:** This duplex patch cable features a 9/125 singlemode core with advanced G.657.A1 glass fiber construction. The LC/UPC to ST/UPC connectors utilize Type A to B crossover polarity, the industry standard for duplex patch cords. With an insertion loss of ≤0.35dB (typical 0.15dB) and return loss ≥20dB, this cable meets rigorous performance standards tested in accordance with ANSI/TIA/EIA-455-171-A standards. **Physical Characteristics:** The 1.8mm outside diameter enables seamless integration into dense cable management systems. The bright yellow OFNR-rated jacket provides excellent visibility in server rooms and data centers while meeting fire safety codes. The cable is compact yet durable, measuring 5.0" x 0.2" x 5.0" with a case package of 10x10x10. **Performance & Reliability:** Designed for wavelengths of 1310 nm and 1550 nm, this cable delivers consistent attenuation rates of 0.25 dB/km at 1310nm or 0.35 dB/km at 1550nm. The G.657.A1 fiber specification ensures compatibility with modern bend-insensitive applications while maintaining traditional singlemode performance characteristics. **Applications:** Ideal for connecting optical switches, routers, transceivers, and network equipment in enterprise data centers, telecommunications facilities, and carrier networks. The 6-meter length accommodates medium-distance backbone connections between equipment racks. **Compliance & Warranty:** Fully RoHS and ELV compliant per EU directive 2002/95/EC, this cable meets international environmental standards. Ships with a 90-day limited warranty and free standard shipping on orders over $99. Custom lengths available upon request. Manufactured across Taiwan, US, and China facilities for consistent quality. **Why Choose This Cable?** With superior optical performance, fire-rated construction, and industry compliance, the JBX85071 delivers exceptional value for professional network installations requiring reliable single-mode connectivity.