The JBX93186 4-meter SC/ST duplex singlemode fiber patch cable represents the gold standard in optical connectivity solutions. Designed for mission-critical applications, this cable combines robust engineering with industry compliance certifications that matter to your bottom line. **Superior Performance Specifications** Built with G.657.A1 single-mode glass fiber and a precision 9/125 micron core diameter, this cable delivers exceptional signal fidelity. The ≤0.35dB insertion loss (typically just 0.15dB) and ≥20dB return loss exceed telecommunications industry standards, ensuring minimal signal degradation over distance. Attenuation ratings of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm provide predictable performance across dual-window transmission bands. **Professional-Grade Construction** The 1.8mm diameter orange OFNR riser-rated jacket provides optimal balance between flexibility and durability. This fire-resistant rating ensures compliance with building codes for both plenum and general-purpose installations. The duplex configuration with Type A to B crossover polarity delivers the most common and practical connection pattern for network patch panels. **Compliance & Reliability** TAA compliance certification makes this cable ideal for government and federal projects. RoHS/ELV compliance ensures environmental responsibility, while the 90-day limited warranty provides peace of mind. Manufactured with quality oversight from facilities in Taiwan, US, and China, this cable undergoes rigorous attenuation testing per ANSI/TIA/EIA-455-171-A-2001 standards. **Practical Applications** Ideal for telecommunications infrastructure, data centers, ISP networks, and enterprise installations. The 4-meter length accommodates typical rack-to-switch distances, while custom lengths are available for specialized deployments. Compatible with both legacy and modern fiber equipment supporting SC and ST connectors. **Value & Convenience** Qualify for free standard shipping on orders exceeding $99. Ships from strategically located warehouses in California, Texas, and South Carolina for rapid delivery. The orange color provides high visibility in crowded cable environments, simplifying network management and troubleshooting.