The JBX42574 ST/APC to FC/APC duplex fiber patch cable represents professional-grade connectivity for telecommunications infrastructure, data centers, and enterprise networks. This 2.5-meter cable delivers exceptional optical performance with industry-leading specifications designed to meet the most stringent transmission requirements. Optical Performance Excellence: Featuring a 9/125 singlemode core with G.657.A1 glass fiber specifications, this cable achieves remarkable attenuation characteristics: 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm wavelengths. The measured insertion loss of ≤0.35dB (typical 0.15dB) and return loss ≥20dB ensure minimal signal reflection and superior data fidelity, critical for long-distance telecommunications and high-speed data transmission. Construction and Safety: The cable features a thin 1.8mm outside diameter wrapped in a durable plastic jacket rated OFNR (Optical Fiber Non-conductive Riser), providing fire safety compliance for vertical cable runs in multi-story buildings. The distinctive yellow jacket enables rapid visual identification in complex cable management environments, reducing installation time and maintenance errors. Compliance and Reliability: This product achieves TAA (Trade Agreements Act) compliance, making it eligible for government and public sector procurement. RoHS/ELV directives ensure environmental responsibility without compromising performance. Tested in accordance with ANSI/TIA/EIA-455-171-A-2001 standards, every cable undergoes rigorous quality verification. Flexibility and Support: Custom length options accommodate non-standard installations, while competitive free shipping on orders exceeding $99 reduces total project costs. Multi-location warehousing in Danville CA, Fort Worth TX, and Beaufort SC ensures rapid delivery nationwide. Applications: Ideal for telecommunications networks, data center backbone connections, long-distance signal transmission, and enterprise fiber infrastructure upgrades. The duplex Type A to B crossover configuration addresses the majority of standard installation requirements.