The JBX42020 45-meter LC/APC to LC/UPC duplex single mode fiber patch cable represents professional-grade connectivity for modern network infrastructure. This cable is engineered to meet the demanding requirements of data centers, telecommunications facilities, and enterprise network environments where reliable signal transmission is critical. Key Technical Specifications: Built around a 9/125 single mode fiber core with G.657.A1 glass composition, this cable delivers excellent optical performance. Insertion loss is rated at ≤0.35dB (0.15dB typical), while return loss exceeds 20dB, ensuring minimal signal degradation. Attenuation measurements of 0.25dB/km at 1310nm and 0.35dB/km at 1550nm provide consistent performance across standard telecommunications wavelengths. Connector Configuration: The LC/APC to LC/UPC connection with Type A to B crossover polarity is the industry standard for duplex patch cord applications, making this cable immediately compatible with most network equipment. LC connectors offer superior density compared to larger connector types, enabling efficient use of panel space in crowded equipment racks. Durability and Compliance: The 1.8mm outer diameter yellow jacket is riser-rated (OFNR), meeting building codes for safe installation in vertical cable runs. TAA compliance and RoHS/ELV certification ensure this cable meets government procurement requirements and environmental standards. Manufacturing in Taiwan, the US, and China provides supply chain flexibility and competitive pricing. Applications: Ideal for high-speed data transmission, backbone connections, server-to-switch links, and telecommunications signal routing. The 45-meter length accommodates moderate distance installations while maintaining optical performance. Warranty and Support: Backed by a 90-day limited warranty and available in custom lengths upon request. Free standard shipping on orders exceeding $99, with expedited options available. Ships from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) for quick delivery. This cable represents excellent value for network professionals seeking TAA-compliant, performance-tested fiber connectivity solutions.