The JBX42492 ST/APC to ST/UPC duplex singlemode fiber patch cable represents a premium solution for professional-grade optical fiber networking. Manufactured to exacting standards, this 10-meter cable is purpose-built for applications demanding high reliability, low signal loss, and proven performance in telecommunications and data center environments. **Technical Excellence:** The cable features 9/125 singlemode fiber with G.657.A1 glass composition, specifically engineered to minimize macrobending losses while maintaining superior long-distance signal transmission characteristics. Attenuation performance of 1310 nm: 0.25 dB/km and 1550 nm: 0.35 dB/km ensures efficient data transmission across extended network runs. The measured insertion loss of ≤0.35dB (typical 0.15dB) and return loss ≥20dB exceed industry standards, guaranteeing exceptional signal quality. **Design & Build Quality:** The robust 1.8mm outside diameter construction is protected by OFNR riser-rated jacketing, suitable for installation in plenum and non-plenum environments. The bright yellow jacket provides superior visibility for cable identification and management—critical in complex infrastructure deployments. Duplex configuration with Type A to B crossover polarity offers the most versatile connectivity pattern for standard patch panel applications. **Compliance & Standards:** TAA compliant with RoHS/ELV directive compliance (EU 2002/95/EC), this cable meets stringent regulatory requirements for government and enterprise procurement. Manufacturing locations in Taiwan, US, and China ensure consistent quality and supply chain reliability. **Versatile Applications:** Ideal for data centers, telecom facilities, enterprise networks, and any environment requiring dependable singlemode connectivity. Custom lengths available for specific installation requirements. **Support & Warranty:** Includes 90-day limited warranty. Free standard shipping on orders over $99 from multiple domestic warehouses (Danville CA, Fort Worth TX, Beaufort SC) ensures rapid delivery nationwide. Choose the JBX42492 for uncompromising fiber optic performance backed by professional-grade manufacturing standards.