The JBX42496 25m ST/APC to ST/UPC duplex singlemode fiber patch cable is engineered for organizations requiring high-performance optical connectivity in data center, telecommunications, and enterprise network environments. This TAA-compliant solution meets strict government procurement standards while delivering exceptional optical performance and reliability. **Technical Specifications:** Featuring a 9/125 singlemode fiber core with G.657.A1 glass fiber specifications, this duplex cable provides superior signal integrity. The Type A to B crossover polarity configuration is standard for duplex patch cord applications, enabling seamless cross-connection between network switches, patch panels, and optical equipment. Insertion loss is rated at ≤0.35dB typical (0.15dB), with return loss exceeding 20dB—specifications that ensure minimal signal degradation over the 25-meter span. **Build Quality & Protection:** The cable's robust construction features a 1.8mm outer diameter with OFNR (riser-rated) jacketing, providing fire protection and space-saving routing through building infrastructure. The distinctive yellow jacket facilitates quick identification during installation and maintenance, reducing deployment time and support costs. **Compliance & Standards:** Fully RoHS/ELV compliant per EU Directive 2002/95/EC, this cable meets the stringent environmental and safety requirements of modern procurement departments. It has been attenuation-tested in accordance with ANSI/TIA/EIA-455-171-A-2001 standards, ensuring every cable meets published performance claims. **Applications:** Ideal for cross-connections in data centers, telecommunications facilities, enterprise LANs, and broadcast facilities requiring singlemode fiber. The duplex configuration enables simultaneous bidirectional communication, optimizing bandwidth utilization. **Availability & Support:** Available in custom lengths to match your exact installation requirements. Ships from multiple US locations (California, Texas, South Carolina) ensuring rapid delivery. Every purchase includes our 90-day limited warranty and free standard shipping on orders exceeding $99. Custom configurations available for bulk orders.