The JBX42124 SC/APC to SC/UPC duplex fiber patch cable represents professional-grade connectivity engineered for mission-critical network installations. This 2.5-meter cable combines precision manufacturing with rigorous quality testing to ensure reliable signal transmission across your fiber optic infrastructure. **Technical Excellence:** Built on 9/125 single mode fiber with G.657.A1 specification, this cable delivers optimal optical performance for long-distance, high-bandwidth applications. The duplex configuration with two fiber strands enables simultaneous bidirectional communication, essential for full-duplex network operations. Insertion loss testing confirms ≤0.35dB typical performance at 1310/1550 nm wavelengths, exceeding industry standards and minimizing signal degradation. **Connector Configuration:** The SC/APC to SC/UPC connector pairing addresses the common need for crossover connectivity between different fiber systems. APC (angled physical contact) connectors on one end minimize reflections, while UPC (ultra-physical contact) connectors on the other provide standard compatibility. Type A to B polarity configuration accommodates duplex patch cord requirements. **Durability & Compliance:** The yellow OFNR (Optical Fiber Non-conductive Riser) jacket provides excellent visibility in complex cable runs while meeting stringent flame-spread requirements for building installations. RoHS/ELV compliance and TAA certification make this cable suitable for government contracts and regulated environments. The 1.8mm outer diameter allows routing through tight spaces without compromising performance. **Applications:** Ideal for data centers, telecommunications facilities, broadcast studios, medical imaging networks, and enterprise campuses requiring professional-grade single mode connectivity. Particularly valuable where compliance documentation and government procurement standards are mandatory. **Quality Assurance:** Every cable undergoes attenuation testing per ANSI/TIA/EIA-455-171-A standards. The 90-day limited warranty reflects manufacturer confidence in product reliability. Custom lengths available for specialized installations. **Value & Support:** Free standard shipping on orders exceeding $99, with rapid fulfillment from multiple U.S. distribution centers in California, Texas, and South Carolina. Professional technical support available for installation guidance and compatibility questions.