The JBX42089 90-meter LC/APC to SC/UPC duplex singlemode fiber patch cable represents the gold standard in fiber optic connectivity solutions. Designed for telecommunications professionals, data center administrators, and network engineers, this cable delivers the performance and reliability required for mission-critical applications. **Key Technical Features:** This duplex patch cable features true 9/125 singlemode fiber construction with G.657.A1 glass specifications, providing exceptional signal fidelity across standard telecommunications wavelengths. The LC/APC connector termination offers superior return loss characteristics (≥20dB), while the SC/UPC connector provides versatile compatibility with legacy and modern equipment. With a mere 1.8mm outside diameter, this cable fits seamlessly into tight conduit spaces and equipment racks. **Performance Specifications:** Attenuation testing conducted in accordance with ANSI/TIA/EIA-455-171-A standards confirms exceptional performance: insertion loss of ≤0.35dB (typical 0.15dB), with attenuation ratings of 0.25dB/km at 1310nm or 0.35dB/km at 1550nm. These specifications enable reliable long-distance signal transmission for voice, video, and data applications. **Compliance & Safety:** TAA compliant for government procurement, RoHS/ELV certified, and manufactured in compliance with EU Directive 2002/95/EC. The riser-rated (OFNR) jacketing ensures code compliance for in-building installations and provides excellent durability against physical stress. **Practical Advantages:** The distinctive yellow jacket simplifies cable identification and management in complex installations. This 90-meter length eliminates intermediate couplers for most applications, reducing signal loss and connection points. Available in custom lengths for specialized requirements, with free standard shipping on orders over $99. Backed by a 90-day limited warranty and shipped from multiple U.S. locations for rapid delivery. **Applications:** Ideal for telecommunications networks, data center cabling infrastructure, enterprise LAN installations, university networks, and government facilities requiring TAA compliance. Whether upgrading existing systems or building new fiber infrastructure, this professional-grade patch cable provides the reliability and performance network professionals demand.