The JBX91209 90-Meter SC/ST Duplex Singlemode Fiber Patch Cable is engineered for mission-critical network infrastructure requiring superior performance and compliance. This professional-grade optical cable features duplex configuration with two 9/125 singlemode fiber strands, delivering reliable bidirectional signal transmission over extended distances. **Technical Excellence:** Built with G.657.A1 glass fiber and featuring SC/UPC to ST/UPC connectors in Type A to B crossover configuration, this cable achieves exceptional performance metrics. Insertion loss remains at or below 0.35dB typical (0.15dB at optimal conditions), while return loss exceeds 20dB. Attenuation specifications meet stringent standards: 0.25 dB/km at 1310nm or 0.35 dB/km at 1550nm, tested in accordance with ANSI/TIA/EIA-455-171-A-2001. **Compliance & Safety:** TAA compliant and RoHS/ELV certified under EU directive 2002/95/EC, this cable meets federal procurement requirements. The green OFNR riser-rated jacket (1.8mm OD) ensures fire safety compliance and provides superior protection in commercial building environments. **Applications & Benefits:** Perfect for data centers, telecommunications hubs, network closets, and enterprise campus networks. The 90-meter length accommodates longer horizontal runs while maintaining signal integrity. Duplex configuration supports full-duplex communication in single-cable deployment, reducing installation complexity. **Quality Assurance:** Backed by a 90-day limited warranty and available in custom lengths for specific project requirements. Ships from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders over $99. **Why Choose This Cable:** Industry-standard SC/ST connectors offer universal compatibility. Superior attenuation performance minimizes signal degradation. RoHS compliance ensures environmental responsibility. TAA compliance guarantees procurement eligibility for government and institutional projects. The professional green jacket simplifies network documentation and cable management. Whether upgrading legacy networks or deploying new infrastructure, the JBX91209 delivers proven reliability and performance.