The JBX43426 4m FC/APC to FC/UPC Simplex Singlemode Fiber Patch Cable represents a precision-engineered solution for fiber optic network connectivity in professional environments. Designed to meet the most stringent telecommunications standards, this cable delivers reliable signal transmission for critical infrastructure applications. **Technical Excellence** Built on a 9/125 singlemode core with G.657.A1 glass fiber technology, this patch cable achieves exceptional performance metrics. The insertion loss of ≤0.35dB (typical 0.15dB) and return loss ≥20dB ensure minimal signal degradation across standard telecommunications wavelengths. Performance testing follows ANSI/TIA/EIA-455-171-A-2001 standards, guaranteeing consistency and reliability across every unit. **Connector Configuration** The FC/APC to FC/UPC configuration provides flexibility for various network topologies. The angled physical contact (APC) on one end and ultra-physical contact (UPC) on the other accommodate different installation scenarios and network architectures. This polarity-straight-through design simplifies integration with existing infrastructure. **Installation & Durability** The OFNR (Optical Fiber Non-conductive Riser) rating permits installation in riser spaces and standard conduit runs. The yellow jacket provides superior visibility during installation and maintenance, reducing errors and improving cable management. At just 1.8mm outside diameter, the cable fits efficiently through existing cable pathways without requiring infrastructure modifications. **Compliance & Certifications** TAA compliance ensures this cable meets federal procurement requirements. RoHS/ELV certification (EU directive 2002/95/EC) confirms environmental compliance and restriction of hazardous substances, making it suitable for regulated industries and global deployments. **Warranty & Support** Backed by a comprehensive 90-day limited warranty, plus free standard shipping on orders exceeding $99, this product combines quality assurance with exceptional value. Multiple sourcing locations (Danville, CA; Fort Worth, TX; Beaufort, SC) ensure rapid delivery and consistent availability. **Custom Solutions Available** For non-standard requirements, custom lengths are available, allowing tailored solutions for specific installation needs without compromising quality or performance specifications.