The JBX42664 FC/APC to LC/UPC duplex fiber patch cable represents a superior solution for modern optical networking infrastructure. This 2.5-meter cable combines reliable performance with exceptional build quality, making it an ideal choice for telecommunications professionals, data center managers, and network engineers. **Technical Excellence** Constructed with 9/125 singlemode fiber and G.657.A1 glass standards, this duplex cable delivers outstanding optical performance. The FC/APC (angle-polished connector) to LC/UPC (ultra-polished connector) configuration supports Type A to B crossover polarity, the industry standard for duplex patch cords. With measured insertion loss of ≤0.35dB (typical 0.15dB) and return loss ≥20dB, signal integrity is maximized across 1310nm and 1550nm wavelengths, supporting attenuation rates of 0.25dB/km and 0.35dB/km respectively. **Compliance & Standards** Fully TAA compliant, this cable meets government procurement standards and carries RoHS/ELV certification per EU Directive 2002/95/EC. Attenuation testing adheres to ANSI/TIA/EIA-455-171-A-2001 standards, ensuring consistent quality and reliability. **Practical Design** The distinctive yellow OFNR-rated jacket provides superior identification in multi-cable installations while maintaining riser-rated fire safety. At 1.8mm outside diameter, it offers excellent space efficiency. The cable is available in custom lengths to accommodate specific installation requirements. **Service & Support** Backed by a 90-day limited warranty and shipped from multiple U.S. locations (California, Texas, and South Carolina), this product qualifies for free standard shipping on orders over $99. Whether upgrading legacy systems or building new infrastructure, the JBX42664 delivers professional-grade performance at competitive pricing.