The JBX42507 is a premium-quality, 80-meter ST/APC to ST/UPC duplex singlemode fiber patch cable designed for mission-critical network applications requiring exceptional reliability and performance. This cable bridges the connection gap between equipment using different connector types while maintaining signal integrity across extended distances. **Technical Excellence** Features a 9/125 singlemode fiber core with G.657.A1 glass composition, optimized for both 1310nm and 1550nm wavelengths. Attenuation rates are exceptionally low at 0.25dB/km (1310nm) or 0.35dB/km (1550nm), ensuring minimal signal degradation. Insertion loss of ≤0.35dB typical and return loss ≥20dB exceed industry standards, making this cable suitable for high-speed data transmission and sensitive applications. **Compliance & Standards** TAA (Trade Agreements Act) compliant, meeting government procurement requirements. Adheres to RoHS/ELV directives (EU 2002/95/EC) and is manufactured to ANSI/TIA/EIA-455-171-A-2001 standards. Riser-rated (OFNR) jacketing allows indoor building installations while maintaining fire safety compliance. **Practical Design** The distinctive yellow jacket provides easy identification in complex network environments and helps prevent installation errors. The 1.8mm outside diameter offers flexibility without compromising durability. Type A to B crossover polarity is configured for duplex communications—the most common setup for interconnecting different fiber equipment. **Installation & Deployment** The 80-meter length reduces junction points and potential signal loss in long-distance runs. Custom lengths are available for non-standard applications. Free standard shipping on orders over $99 makes bulk purchasing economical. The lightweight plastic construction and standard duplex format simplify installation in data centers, telecom facilities, and enterprise networks. **Warranty & Support** Included 90-day limited warranty provides peace of mind. Ships from strategically located US fulfillment centers, ensuring quick delivery to most locations. Whether upgrading existing infrastructure or deploying new fiber networks, the JBX42507 delivers professional-grade performance at competitive pricing.