The JBX42188 LC/APC to FC/UPC duplex singlemode fiber patch cable represents a professional-grade solution for mission-critical fiber optic network infrastructure. Engineered to exacting standards, this 6-meter cable delivers exceptional performance characteristics that meet or exceed industry requirements. **Technical Specifications:** This cable utilizes 9/125 singlemode fiber construction with G.657.A1 glass fiber characteristics, supporting both conventional and bend-insensitive applications. The LC/APC-terminated end connects to FC/UPC connectors, making it ideal for hybrid network environments requiring cross-platform compatibility. Operating across standard telecommunications wavelengths (1310nm and 1550nm), the cable achieves minimal attenuation (0.25dB/km at 1310nm, 0.35dB/km at 1550nm) and exceptional return loss performance (≥20dB). **Key Performance Features:** With insertion loss of just 0.35dB maximum (0.15dB typical), this duplex configuration ensures signal integrity for long-distance transmission. The Type A to B crossover polarity provides the most common duplex patch cord configuration, simplifying installation and reducing compatibility issues. **Build Quality & Compliance:** The yellow OFNR (riser-rated) jacket provides fire-retardant protection suitable for vertical runs in building infrastructure. TAA compliance ensures this cable meets government procurement standards. RoHS/ELV directive compliance guarantees environmental responsibility. The durable 1.8mm outside diameter balances protection with space-saving design. **Applications:** Perfect for data centers, telecommunications closets, enterprise LAN/WAN backbones, and service provider networks. The duplex configuration enables bidirectional communication in a single cable run, reducing installation complexity and costs. **Customization & Support:** Custom lengths are available for specialized deployment scenarios. All cables are factory-tested and include a 90-day limited warranty. Ships from multiple US locations with free standard shipping on qualifying orders. Whether upgrading legacy systems or installing new fiber infrastructure, this cable provides reliable, cost-effective connectivity.