The JBX90199 40-meter SC/ST duplex singlemode fiber patch cable represents enterprise-level connectivity for demanding network infrastructures. Built to exacting specifications, this cable combines performance, compliance, and reliability in a professional-grade solution suitable for telecommunications, data center, and institutional networks. **Technical Excellence:** Utilizing a 9/125 micrometer singlemode fiber core with G.657.A1 glass composition, this duplex cable delivers superior optical performance. The SC/UPC to ST/UPC connector configuration provides Type A-B crossover polarity, the industry standard for duplex patch cord applications. Attenuation testing confirms performance at both 1310nm (0.25 dB/km) and 1550nm (0.35 dB/km) wavelengths, meeting rigorous ANSI/TIA/EIA-455-171-A-2001 standards. **Compliance & Safety:** TAA compliant certification ensures this cable meets federal procurement requirements for government contracts and institutional buyers. Full RoHS/ELV compliance reflects environmental responsibility and adherence to EU directive 2002/95/EC. The OFNR (Optical Fiber Nonmetallic Riser) rating allows safe installation in building riser spaces without conduit, while the 1.8mm outer diameter jacketing provides durability and flexibility. **Practical Design Features:** The distinctive pink color-coding facilitates rapid cable identification in complex network installations, reducing troubleshooting time and preventing connectivity errors. The 40-meter length accommodates extended horizontal runs typical in campus networks and large facilities. For unique requirements, custom lengths are available to optimize your specific deployment. **Applications:** • Campus network backbone connections • Data center patch panel installations • Telecommunications infrastructure upgrades • Government and institutional networks requiring TAA compliance • Long-distance equipment-to-equipment connections **Quality Assurance:** Backed by a 90-day limited warranty and manufactured across multiple facilities (Taiwan, US, China) for supply chain reliability. Ships with free standard shipping on orders exceeding $99 from regional distribution centers in California, Texas, and South Carolina. This professional-grade solution offers exceptional value for organizations requiring reliable, compliant, and high-performance fiber optic connectivity.