The JBX88211 50-meter ST/ST duplex singlemode fiber patch cable represents a professional-grade solution for demanding fiber optic network installations. Built with precision engineering and quality materials, this cable delivers exceptional performance for applications requiring extended cable runs while maintaining signal integrity. **Specifications & Performance:** This duplex singlemode cable features a 9/125 micron core, the industry standard for long-distance, high-speed data transmission. The cable achieves impressive low insertion loss ratings—≤0.35dB maximum (typical 0.15dB) across standard telecommunications wavelengths (1310nm and 1550nm). Return loss specifications exceed 20dB, ensuring minimal signal reflection and optimal performance in sensitive applications. **Design & Construction:** The ST/UPC connectors employ Type A to B crossover polarity, the most common configuration for duplex patch cords, enabling seamless integration with existing network infrastructure. The G.657.A1 glass fiber provides superior bend resistance and durability compared to standard G.652.D fiber. The 1.8mm outer diameter facilitates clean routing through cable trays and conduit systems. **Compliance & Certifications:** TAA (Trade Agreements Act) compliant for government and enterprise procurement. RoHS/ELV certified for environmental responsibility. OFNR (Optical Fiber Non-conductive Riser-rated) jacketing ensures compliance with building codes for vertical cable runs in non-plenum spaces. Manufactured to ANSI/TIA/EIA-455-171-A standards for proven reliability. **Applications:** Ideal for data center interconnects, telecommunications networks, campus fiber backbone implementations, and any installation requiring 50-meter single-mode runs. The yellow jacket aids in cable management and troubleshooting. **Additional Benefits:** Free standard shipping on orders exceeding $99. 90-day limited warranty included. Custom length options available for unique installation requirements. Ships from multiple U.S. locations for expedited delivery. This cable represents outstanding value for IT professionals and network installers demanding performance, reliability, and compliance in their fiber optic infrastructure.