The JBX42144 SC/APC to SC/UPC duplex single mode fiber patch cable represents premium quality networking infrastructure designed for mission-critical telecommunications environments. This 65-meter cable serves as the backbone for high-speed data transmission, supporting applications ranging from long-distance telecommunications networks to enterprise data centers and service provider installations. **Technical Excellence:** Built with 9/125 single mode fiber and G.657.A1 glass fiber specifications, this cable minimizes signal degradation over extended distances. The duplex Type A to B crossover configuration enables full-duplex communication, essential for bidirectional signal transmission. Insertion loss specifications of ≤0.35dB (0.15dB typical) and return loss ≥20dB ensure minimal signal reflection and maximum transmission efficiency. Attenuation rates of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm meet industry standards for long-distance telecommunications. **Compliance & Standards:** As a TAA (Trade Agreements Act) compliant product, this cable meets U.S. government procurement requirements, making it suitable for federal projects and public sector infrastructure. RoHS and ELV directive compliance ensures environmental responsibility and safe handling. Rigorous testing to ANSI/TIA/EIA-455-171-A standards guarantees performance reliability. **Practical Features:** The distinctive yellow jacket simplifies cable identification and tracing in complex network environments, reducing troubleshooting time. OFNR (Optical Fiber Non-conductive Riser) rating permits safe installation in vertical cable runs between building floors. The slim 1.8mm diameter optimizes space utilization in crowded cable trays and conduits. **Flexibility & Availability:** While this listing covers the 65-meter configuration, custom lengths are available to match your specific installation requirements. Standard shipping is free on orders exceeding $99, with multiple distribution centers ensuring prompt delivery. **Professional Installation:** Recommended for certified fiber technicians. Proper handling, storage in appropriate temperature conditions (typically -5°C to +60°C), and careful connector management extend cable lifespan and maintain performance integrity. Ideal for telecom operators, ISPs, enterprises, and data center professionals seeking reliable, standards-compliant single mode fiber connectivity.