The JBX85077 15-meter LC/ST duplex singlemode fiber patch cable represents a premium solution for telecommunications infrastructure requiring high-speed, reliable optical signal transmission. This professionally-specified cable combines robust construction with exceptional performance characteristics that exceed industry standards. **Technical Excellence:** This duplex patch cable features 9/125 singlemode core construction, the industry standard for long-distance, high-bandwidth applications. The G.657.A1 glass fiber composition ensures superior optical properties with attenuation rates of 0.25 dB/km at 1310nm or 0.35 dB/km at 1550nm. Low insertion loss (≤0.35dB typical) and high return loss (≥20dB) minimize signal degradation, critical for maintaining data integrity in professional networks. **Connector Specifications:** LC/UPC to ST/UPC connectors with Type A to B crossover polarity provide standard duplex configuration, ensuring compatibility with most network equipment and patching systems. UPC (Ultra Physical Contact) polishing delivers superior return loss and low reflectance for optimal signal quality. **Construction & Durability:** The 1.8mm outside diameter jacketing utilizes OFNR (Optical Fiber Non-Conductive Riser) rating, suitable for in-wall and plenum applications where fire safety compliance is required. Yellow jacket coloring aids in network organization and identification. Robust plastic accessories ensure connector protection and longevity in demanding environments. **Compliance & Standards:** All testing adheres to ANSI/TIA/EIA-455-171-A-2001 standards, with RoHS/ELV compliance and EU Directive 2002/95/EC certification. Backed by a 90-day limited warranty and manufactured across Taiwan, US, and China facilities. **Applications:** Ideal for data center interconnections, telecom infrastructure, fiber-to-the-premises (FTTP) installations, and enterprise network upgrades. Supports 10G, 40G, and 100G Ethernet applications requiring single-mode performance. **Shipping & Support:** Free standard shipping on orders exceeding $99, with fulfillment from Danville CA, Fort Worth TX, or Beaufort SC locations. Custom lengths available upon request for specialized installations.