The JBX42603 2-meter FC/APC to ST/UPC duplex singlemode fiber patch cable represents a critical component for modern fiber optic network infrastructure. Engineered for professionals who demand reliability, performance, and compliance, this cable bridges connectivity between different connector types commonly found in diverse network environments. **Technical Specifications:** This cable features a robust 9/125 singlemode fiber core with G.657.A1 specification, which supports both traditional and bend-insensitive applications. The 1.8mm compact outer diameter enables efficient cable management without sacrificing durability. Attenuation is measured at 1310 nm: 0.25 dB/km or 1550 nm: 0.35 dB/km, with typical insertion loss of just 0.15dB, ensuring minimal signal degradation over the 2-meter span. **Key Features:** The FC/APC (angle-polished connector) to ST/UPC (straight connector) configuration provides Type A to B crossover polarity, the industry standard for duplex patch cord applications. The yellow OFNR (Optical Fiber Nonconductive Riser) jacket is flame-retardant and suitable for plenum and riser installations, meeting stringent building codes. **Compliance & Quality Assurance:** Fully TAA compliant and RoHS/ELV certified, this cable meets EU directive 2002/95/EC requirements. Performance testing adheres to ANSI/TIA/EIA-455-171-A-2001 standards. The 90-day limited warranty provides peace of mind for critical installations. **Applications:** Ideal for data centers, telecommunications facilities, enterprise networks, and fiber-to-the-premises installations. The duplex configuration allows simultaneous bidirectional signal transmission, supporting full-duplex communication protocols. **Custom Options:** Available in custom lengths to accommodate specific installation requirements, offering flexibility beyond the standard 2-meter configuration. **Shipping & Support:** Enjoy free standard shipping on orders exceeding $99. Ships from multiple US locations (Danville, CA; Fort Worth, TX; Beaufort, SC) for expedited delivery. Case packaging in 10x10x10 dimensions ensures secure transit and storage.