The JBX42571 ST/APC to FC/APC duplex singlemode fiber patch cable represents the intersection of reliability, performance, and regulatory compliance—essential for modern data center and telecommunications infrastructure. **Technical Excellence** This 1-meter cable features 9/125 singlemode fiber construction, the industry standard for long-distance, high-bandwidth applications. The G.657.A1 glass fiber specification ensures compatibility with bend-insensitive installations while maintaining optical performance. Attenuation specifications of 0.25 dB/km at 1310 nm or 0.35 dB/km at 1550 nm demonstrate performance aligned with ANSI/TIA/EIA-455-171-A standards. **Superior Optical Performance** With typical insertion loss of just 0.15dB and return loss exceeding 20dB, this cable minimizes signal degradation. The precise APC (Angled Physical Contact) connectors on both ends reduce back-reflection, critical for maintaining signal integrity in sensitive optical networks. **Installation & Identification** The distinctive yellow OFNR-rated jacket provides immediate visual identification while ensuring compliance with fire safety regulations. The slim 1.8mm diameter facilitates routing through congested cable trays and conduit systems. The duplex configuration with Type A to B crossover polarity represents the most common arrangement, eliminating confusion during installation. **Compliance & Standards** TAA compliance makes this cable suitable for government and federal procurement contracts. RoHS/ELV directive adherence ensures environmental responsibility. Manufacturing in Taiwan, the US, and China provides supply chain flexibility. **Custom Solutions** While this 1-meter version suits standard patch distances, custom lengths are available to meet specific installation requirements, from ultra-short 0.5m runs to extended 100m+ deployments. **Warranty & Support** Backed by a 90-day limited warranty and shipped from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC), this cable combines professional-grade quality with convenient logistics.