The JBX43134 15-meter SC/APC to SC/UPC simplex singlemode fiber patch cable represents professional-grade connectivity solutions for demanding telecommunications and data center applications. This cable combines precision engineering with proven optical performance standards, making it an ideal choice for network installers, system integrators, and IT professionals. **Technical Specifications:** This singlemode fiber cable features a 9/125 micron core with G.657.A1 glass fiber composition, optimized for long-distance, high-bandwidth transmission. The simplex design carries a single fiber strand with SC/APC (angled physical contact) and SC/UPC (ultra-physical contact) connectors, enabling direct connection between different connector types. Measured insertion loss of ≤0.35dB (typical 0.15dB) and return loss ≥20dB ensure minimal signal degradation across standard telecommunications wavelengths. **Build Quality and Compliance:** The 1.8mm outside diameter cable is jacketed in riser-rated (OFNR) yellow PVC material, providing flame resistance suitable for commercial building installations. The distinctive yellow color aids quick identification during dense cable management scenarios. All components comply with RoHS/ELV directives and EU 2002/95/EC regulations, with TAA certification for government procurement eligibility. **Performance and Reliability:** Attenuation testing confirms performance consistency: 0.25dB/km at 1310nm and 0.35dB/km at 1550nm wavelengths. This reliability makes the cable suitable for critical network infrastructure, telecommunications backbone connections, and high-speed data transmission environments where signal integrity is paramount. **Flexibility and Support:** Custom lengths are available for unique installation requirements. The included 90-day limited warranty provides confidence in product quality. Ships from multiple US locations (Danville CA, Fort Worth TX, and Beaufort SC) with free standard shipping on qualifying orders. **Applications:** Ideal for connecting optical networking equipment, telecommunications systems, data center interconnects, and fiber-to-the-premise installations where singlemode technology is required. The SC/APC to SC/UPC configuration accommodates mixed connector environments common in upgrade scenarios.