The JBX42504 65-meter ST/APC to ST/UPC duplex singlemode fiber patch cable represents a premium solution for professional network installations, data centers, and telecommunications infrastructure requiring extended-distance signal transmission with minimal loss and maximum reliability. **Technical Excellence** This cable features precision-engineered 9/125 singlemode fiber with G.657.A1 glass specifications, delivering industry-leading performance metrics. The exceptionally low insertion loss of ≤0.35dB (0.15dB typical) ensures maximum signal strength over the full 65-meter span, critical for long-distance applications. Return loss exceeding 20dB provides superior signal reflection management, while carefully controlled attenuation rates (0.25 dB/km at 1310nm; 0.35 dB/km at 1550nm) maintain signal integrity across wavelength windows. **Compliance & Reliability** Full TAA compliance makes this cable ideal for government and institutional procurement processes. RoHS/ELV directive adherence and ANSI/TIA/EIA-455-171-A-2001 standards certification guarantee compatibility with modern network standards. The 90-day limited warranty provides purchase confidence. **Practical Design** The vibrant yellow OFNR-rated jacket offers flame-resistant protection while maintaining a slim 1.8mm profile for efficient cable routing. Type A to B crossover polarity represents the most common duplex configuration, simplifying installation and reducing compatibility issues. Multiple U.S. shipping locations enable rapid deployment. **Application Versatility** Ideal for telecommunications networks, data center interconnects, laboratory environments, and any application demanding superior fiber optic performance. The extended 65-meter length eliminates intermediate repeaters or additional equipment, reducing system complexity and cost. **Custom Options** Available in custom lengths for specialized installations requiring specific distance requirements, providing flexibility for unique deployment scenarios. **Value Proposition** This professional-grade cable delivers exceptional value through superior specifications, regulatory compliance, and reliable performance, backed by comprehensive warranty coverage and convenient U.S.-based shipping with free standard shipping on orders exceeding $99.