The JBX42247 LC/APC to ST/UPC 5m duplex singlemode fiber patch cable represents a professional-grade networking solution engineered for demanding telecommunications and data center applications. This cable combines precision-engineered connectors with high-quality optical fiber to deliver consistent, reliable performance. **Technical Specifications:** Built with 9/125 singlemode fiber core and G.657.A1 glass fiber technology, this cable achieves exceptional attenuation rates of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm wavelengths. The measured insertion loss is ≤0.35dB (typical 0.15dB) with return loss specifications of ≥20dB, ensuring minimal signal degradation across extended runs. **Connector Configuration:** The LC/APC to ST/UPC configuration with Type A to B crossover polarity is the industry standard for duplex patch applications, making this cable compatible with most modern network equipment. The 1.8mm outer diameter provides flexibility for cable management while maintaining durability. **Compliance & Quality:** Fully TAA compliant for government and enterprise procurement, this cable meets RoHS/ELV directives and is manufactured according to ANSI/TIA/EIA-455-171-A-2001 standards. The OFNR (Riser Rated) jacket provides flame-resistant protection suitable for in-building vertical runs without conduit. **Practical Advantages:** Available in custom lengths to match your specific installation requirements, this cable ships from multiple US distribution centers (Danville CA, Fort Worth TX, and Beaufort SC) for fast delivery. Free standard shipping applies to orders exceeding $99. The 90-day limited warranty provides peace of mind for your networking investment. **Ideal Applications:** Perfect for interconnecting network switches, servers, and fiber optic transceivers in enterprise data centers, telecommunications facilities, and campus networks. The yellow jacket aids in visual identification and asset tracking within complex installations. Whether upgrading existing infrastructure or building new fiber optic networks, this premium patch cable delivers the performance and reliability professionals demand.