The JBX42551 9-meter ST/APC to FC/UPC duplex singlemode fiber patch cable represents a premium solution for professional optical network installations. This cable bridges two of the most prevalent connector types in fiber optics, making it essential for diverse network configurations and upgrades. **Superior Optical Performance:** Built with 9/125 singlemode fiber core (G.657.A1 specification), this cable delivers exceptional signal clarity with typical insertion loss of just 0.15dB and maximum return loss of 20dB or greater. The attenuation specification of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm ensures optimal performance across standard telecommunications wavelengths, supporting both short-reach and long-distance signal transmission. **Professional-Grade Construction:** The cable features a durable yellow OFNR (riser-rated) jacket that provides fire-safety compliance while maintaining flexibility for installation in cable trays and wall pathways. The 1.8mm outer diameter allows for efficient cable management without excessive space consumption. The Type A to B crossover polarity configuration is the most common for duplex patch cords, ensuring compatibility with standard network equipment. **Compliance & Reliability:** TAA (Trade Agreements Act) compliant and manufactured to meet RoHS/ELV directives, this cable qualifies for government contracts and regulated environments. Each unit is backed by a 90-day limited warranty and tested to ANSI/TIA/EIA industry standards. **Ideal Applications:** • Telecommunications infrastructure upgrades • Data center connectivity • Enterprise network installations • Laboratory and research facilities • Carrier and service provider networks **Value & Availability:** Available in custom lengths beyond the standard 9m offering, with free standard shipping on orders over $99. Ships from multiple U.S. locations (Danville CA, Fort Worth TX, Beaufort SC) for rapid delivery. Whether you're a network professional, IT manager, or systems integrator, this cable provides the reliability and performance demanded by modern optical networks. Order your JBX42551 fiber patch cable today and experience the difference quality connectivity makes in your network infrastructure.