The JBX42444 FC/APC to FC/UPC 65-meter duplex singlemode fiber patch cable represents a premium solution for professional-grade fiber optic network installations. Built to exacting industry standards, this cable combines performance, compliance, and reliability for critical network infrastructure. **Technical Excellence:** Features a 9/125 singlemode core with G.657.A1 glass fiber construction, ensuring optimal performance in long-distance signal transmission. The cable has been attenuation tested in accordance with ANSI/TIA/EIA-455-171-A-2001 standards, with verified insertion loss of ≤0.35dB and return loss of ≥20dB. Attenuation specifications meet both 1310nm (0.25dB/km) and 1550nm (0.35dB/km) requirements, making it suitable for diverse wavelength applications. **Compliance & Certification:** TAA compliant for government procurement contracts. Fully RoHS/ELV certified under EU directive 2002/95/EC, ensuring environmental responsibility and regulatory adherence. The riser-rated (OFNR) jacket rating allows safe installation in building plenum spaces and vertical cable runs. **Practical Design:** The bright yellow jacket enhances visibility during installation and troubleshooting, reducing errors and installation time. Type A to B crossover configuration represents the most common duplex patch cord polarity, eliminating compatibility concerns. At 1.8mm outside diameter, the cable fits standard conduit and patch panel installations. **Flexibility & Support:** Custom length availability accommodates unique deployment scenarios. Ships from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) for faster delivery. Manufactured across multiple facilities (Taiwan, US, China) ensuring consistent availability. Backed by a 90-day limited warranty and supported by responsive customer service. **Ideal Applications:** Perfect for data center interconnects, campus network expansions, telecommunications infrastructure, and any installation requiring long-distance singlemode connectivity with minimal signal degradation. The combination of performance specifications, compliance certifications, and reliable construction makes this cable the professional choice for mission-critical fiber optic networks.