The JBX42651 represents professional-grade fiber optic connectivity for modern network infrastructure. This 50-meter duplex singlemode patch cable combines SC/APC and LC/UPC connectors, making it versatile for diverse network architectures and equipment configurations. The SC/APC connector features angled physical contact for superior return loss performance (≥20dB), while the LC/UPC connector provides standard polished physical contact compatibility with standard equipment. Technical Excellence: Constructed with 9/125 singlemode fiber and G.657.A1 glass specifications, this cable achieves exceptional attenuation characteristics of 0.25 dB/km at 1310 nm or 0.35 dB/km at 1550 nm. The low insertion loss (≤0.35dB, 0.15dB typical) minimizes signal degradation over the 50-meter span, ensuring pristine signal quality for sensitive optical applications. Testing conforms to ANSI/TIA/EIA-455-171-A-2001 standards. Compliance & Safety: TAA compliance ensures suitability for government and institutional procurement. RoHS/ELV certification confirms environmental responsibility and regulatory adherence. The OFNR riser rating provides safe installation in building plenums and vertical runs. Practical Design: The distinctive yellow jacket facilitates rapid identification and management in cable-dense environments. The 1.8mm outer diameter provides excellent flexibility for routing through tight spaces. Type A to B crossover polarity (duplex standard) ensures seamless integration with most networking equipment. Applications: Perfect for data centers, telecommunications facilities, campus networks, and laboratory environments requiring reliable singlemode connectivity. The 50-meter length accommodates medium-distance connections without signal degradation. Support & Availability: Ships from multiple U.S. locations (California, Texas, South Carolina) with free standard shipping on orders over $99. Custom lengths available upon request. 90-day limited warranty provides confidence in long-term performance.