The JBX42622 55-meter FC/APC to ST/UPC duplex singlemode fiber patch cable represents the pinnacle of professional network connectivity solutions. Engineered for organizations demanding maximum reliability and performance, this cable bridges diverse network infrastructure components with exceptional signal fidelity. **Technical Excellence** Built with dual 9/125 singlemode fiber strands featuring G.657.A1 glass composition, this cable delivers superior performance characteristics. Insertion loss measurements of ≤0.35dB (with typical performance at 0.15dB) ensure minimal signal degradation across the 55-meter span. Return loss specifications exceeding 20dB provide robust signal reflection control, critical for maintaining data integrity in high-speed applications. Attenuation rates of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm comply with ANSI/TIA/EIA-455-171-A-2001 standards. **Professional Design Features** The distinctive yellow OFNR-rated jacket provides excellent visibility for cable management and identification within complex network environments. The 1.8mm outside diameter balances durability with flexibility, enabling installation in cable trays, conduits, and tight infrastructure spaces without compromising performance. Type A to B crossover configuration delivers the industry-standard polarity arrangement for duplex patch cord applications. **Compliance & Certification** Full RoHS/ELV compliance (EU Directive 2002/95/EC) and TAA certification ensure this cable meets government procurement standards and international environmental regulations. The 90-day limited warranty provides peace of mind for critical network deployments. **Versatile Deployment Options** Ideal for data centers, telecommunications facilities, enterprise networks, and broadcast facilities, this cable excels in any application requiring long-distance, high-fidelity signal transmission. Available in custom lengths to match specific installation requirements, with convenient shipping from multiple US distribution centers. **Care & Maintenance** Maintain optimal performance by avoiding sharp bends (minimum bend radius 25mm) and excessive tension. Store in dry conditions and protect connectors with dust caps when not in use. Regular inspection ensures continued reliability in mission-critical applications.