The JBX91181 1m SC/ST Duplex 9/125 Singlemode Fiber Patch Cable represents a professional-grade solution for organizations requiring dependable fiber optic connectivity. This duplex configuration allows simultaneous bidirectional communication, making it essential for full-duplex network applications where continuous data flow is critical. **Technical Specifications:** This cable features a 9/125 micron singlemode core with G.657.A1 glass fiber specification, ensuring compatibility with modern fiber infrastructure while maintaining backward compatibility with standard single-mode systems. The duplex construction houses two individual fibers in a protective 1.8mm outer diameter jacket, optimizing space utilization in crowded server racks and telecommunications closets. **Performance Metrics:** Testing conducted in accordance with ANSI/TIA/EIA-455-171-A-2001 standards confirms exceptional performance: insertion loss of ≤0.35dB (typical 0.15dB) and return loss ≥20dB at both 1310nm and 1550nm wavelengths. This ultra-low attenuation ensures signal integrity over longer distances and supports high-bandwidth applications including 10Gbps and faster connections. **Compliance & Safety:** The cable meets TAA (Trade Agreements Act) requirements for government procurement, includes RoHS/ELV compliance per EU directive 2002/95/EC, and features OFNR (Optical Fiber Non-conductive Riser) jacketing for superior fire safety ratings in plenum and riser applications. **Practical Features:** The green jacket provides high visibility during installation and maintenance, reducing identification errors. SC/UPC to ST/UPC connectors with Type A to B crossover configuration represent the most common duplex patch cord standard, ensuring seamless integration with existing infrastructure. **Availability & Support:** Available in 1-meter length with custom length options for specialized requirements. Ships from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders exceeding $99. Backed by comprehensive 90-day limited warranty covering manufacturing defects. **Applications:** Ideal for data center interconnects, telecommunications networks, research institutions, and any facility requiring reliable single-mode fiber transmission with strict compliance requirements.