The JBX42985 20m LC/UPC Singlemode Fiber Patch Cable represents a professional-grade solution for organizations requiring reliable optical fiber connectivity. Designed to meet stringent telecommunications standards, this simplex cable delivers consistent performance for high-speed data transmission, telecommunications infrastructure, and critical network applications. **Technical Excellence:** Manufactured with 9/125 micron singlemode fiber core and G.657.A1 glass composition, this cable accommodates modern bend-radius requirements while maintaining optical integrity. The tested insertion loss of ≤0.35dB (typical 0.15dB) and return loss of ≥20dB ensure minimal signal degradation across your network. Attenuation specifications of 0.25 dB/km at 1310 nm or 0.35 dB/km at 1550 nm support both conventional and extended-wavelength applications. **Compliance & Safety:** Fully TAA-compliant with RoHS/ELV certification (EU directive 2002/95/EC), this cable meets government and enterprise procurement requirements. The OFNR-rated (riser) yellow PVC jacket provides flame-resistant properties suitable for vertical cable runs in commercial buildings while offering high visibility for installation and maintenance. **Practical Advantages:** The 1.8mm outside diameter enables efficient cable management in congested data centers and equipment racks. LC/UPC connectors deliver superior optical performance compared to alternatives, with straight-through polarity for straightforward installation. The 20-meter length is ideal for medium-distance runs without requiring additional splice points. **Versatile Applications:** Perfect for data center interconnects, campus network backbone installations, telecommunications equipment connections, and high-speed network upgrades. Custom lengths are available for specific installation requirements. **Quality Assurance:** Every cable is attenuation-tested in accordance with ANSI/TIA/EIA-455-171-A-2001 standards, backed by a 90-day limited warranty. Ships from multiple U.S. locations (Danville, CA; Fort Worth, TX; Beaufort, SC) with free standard shipping on orders exceeding $99.