The JBX42991 50-meter LC/UPC to LC/UPC simplex singlemode fiber patch cable represents an industry-standard solution for professional fiber optic networks. This high-quality telecommunications cable is engineered to deliver consistent, reliable performance in demanding enterprise environments. **Technical Specifications:** Featuring a 9/125 micrometer core with G.657.A1 grade glass fiber, this simplex cable is optimized for long-distance signal transmission. The cable achieves insertion loss of ≤0.35dB at typical usage (0.15dB) and maintains return loss of ≥20dB, ensuring minimal signal degradation. Attenuation specifications include 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm, meeting rigorous telecommunications standards. **Design and Construction:** The cable features a durable 1.8mm outside diameter with OFNR riser-rated yellow PVC jacket that provides flame resistance and environmental protection. The straight-through polarity design enables straightforward installation and integration with existing LC/UPC connector-equipped equipment. **Compliance and Standards:** TAA compliant and manufactured to meet EU RoHS directives (2002/95/EC), this cable adheres to ANSI/TIA/EIA-455-171-A-2001 attenuation testing standards. All specifications are verified through professional testing protocols. **Applications:** Ideal for data centers, telecommunications facilities, campus networks, and enterprise installations requiring single-direction signal transmission. The simplex configuration suits applications where unidirectional communication is required. **Customization and Support:** Custom lengths are available to meet specific installation requirements. The product includes a 90-day limited warranty and ships from multiple U.S. locations with free standard shipping on orders over $99. **Shipping and Availability:** Manufactured in Taiwan, the US, or China, this cable is packaged in standard 10x10x10 case configurations and available for immediate order.