The JBX42360 SC/APC to ST/UPC duplex singlemode fiber patch cable represents a professional-grade solution for telecommunications and data center environments requiring reliable, high-performance connectivity. This 0.5-meter cable is engineered to deliver optimal signal transmission with minimal attenuation across the critical 1310nm and 1550nm wavelengths. **Technical Excellence:** Built with a 9/125 singlemode core conforming to G.657.A1 specifications, this cable achieves exceptional performance metrics: insertion loss of ≤0.35dB (0.15dB typical) and return loss ≥20dB. The duplex configuration with Type A to B crossover polarity provides the standard fiber patch cord setup used across the industry. At 1.8mm outside diameter, the cable maintains a compact profile suitable for dense installations while preserving durability. **Compliance & Safety:** TAA compliant and RoHS/ELV certified per EU directive 2002/95/EC, this cable meets stringent government and environmental standards. The OFNR (Riser Rated) yellow jacket ensures safe installation in building plenum spaces while offering exceptional visibility for network management. **Quality Assurance:** Every cable undergoes rigorous attenuation testing in accordance with ANSI/TIA/EIA-455-171-A-2001 standards, ensuring consistent performance. The 90-day limited warranty provides peace of mind for your investment. **Flexible Options:** While this product ships in 0.5m length, custom lengths are available to match your specific network topology requirements. Ships from strategically located US warehouses (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders exceeding $99. **Applications:** Ideal for telecommunications infrastructure, data center interconnects, enterprise networking, and high-speed fiber optic installations where SC/APC to ST/UPC connectivity is required. The professional yellow jacket facilitates easy identification and network documentation.