The JBX42992 55-meter LC/UPC to LC/UPC simplex singlemode fiber patch cable represents a premium solution for professionals requiring reliable, long-distance fiber optic connectivity. Built with precision-engineered 9/125 singlemode fiber and G.657.A1 glass fiber specifications, this cable delivers exceptional performance for telecommunications networks, data centers, and enterprise infrastructure. **Technical Excellence** This cable achieves outstanding optical performance metrics. With insertion loss specifications of ≤0.35dB (typical 0.15dB) and return loss exceeding 20dB, the JBX42992 minimizes signal degradation across long runs. Attenuation performance of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm ensures reliable transmission across multiple wavelengths used in modern fiber networks. All measurements comply with ANSI/TIA/EIA-455-171-A-2001 standards. **Superior Construction** The cable features OFNR (Optical Fiber, Non-conductive, Riser) rated jacketing, making it suitable for vertical cable runs between floors in buildings. The bright yellow outer jacket facilitates easy identification and installation, while the 1.8mm diameter provides excellent flexibility for routing through tight cable pathways and management systems. **Regulatory Compliance** As a TAA-compliant product, the JBX42992 meets Buy American Act requirements, making it ideal for government and public sector projects. Full RoHS/ELV directive compliance (EU directive 2002/95/EC) ensures environmental responsibility and meets international regulatory standards. **Practical Advantages** With straight-through polarity and simplex (single-strand) configuration, this cable provides straightforward, hassle-free installation. Custom lengths are available beyond the standard 55-meter option, accommodating unique installation requirements. Ships from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders exceeding $99. **Applications** Perfect for campus backbone networks, long-distance data center interconnects, telecommunications infrastructure, and any application requiring reliable singlemode transmission. The combination of length, performance, and compliance makes it an excellent choice for mission-critical network environments. Backed by a 90-day limited warranty and manufactured to exacting standards, the JBX42992 delivers professional-grade reliability when fiber optic performance matters most.