The JBX42732 ST/APC to LC/UPC Duplex Singlemode Fiber Patch Cable represents professional-grade connectivity for demanding network environments. This 10-meter cable delivers the precision and reliability required for mission-critical fiber optic applications. **Technical Excellence:** Engineered with a 9/125 singlemode core to G.657.A1 specifications, this cable provides superior performance characteristics. Insertion loss measurements of ≤0.35dB (typical 0.15dB) ensure minimal signal degradation, while return loss of ≥20dB prevents signal reflection issues. Attenuation specifications of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm demonstrate compliance with ANSI/TIA/EIA-455-171-A-2001 standards. **Regulatory Compliance:** Fully TAA compliant for government procurement and RoHS/ELV certified per EU Directive 2002/95/EC, this cable meets the strictest environmental and procurement standards. The riser-rated (OFNR) jacketing ensures safe deployment in vertical building runs and plenum applications where applicable. **Practical Features:** The distinctive yellow jacket provides immediate visual identification in cable-dense environments, reducing maintenance errors and streamlining network management. The 1.8mm outer diameter balances protection with flexibility, suitable for tight cable management scenarios. Type A to B crossover polarity configuration provides the most common duplex cord setup. **Versatile Applications:** Ideal for connecting telecommunications equipment, network switches, media converters, and optical test equipment. Commonly deployed in data center interconnects, carrier networks, campus backbone infrastructure, and DWDM systems. **Warranty & Support:** Backed by a 90-day limited warranty and manufactured in Taiwan, the USA, or China using consistent quality standards. Custom lengths available for specialized installations. Ships from multiple U.S. distribution centers ensuring rapid delivery. **Why Choose This Cable:** Unlike generic patch cables, this product combines tested performance specifications, regulatory compliance, and professional-grade construction. The combination of low insertion loss, documented attenuation rates, and certified connectors ensures your network maintains signal integrity for years of reliable operation.