The JBX88231 ST/ST Duplex 9/125 Singlemode Fiber Patch Cable represents industrial-grade optical connectivity designed for mission-critical network infrastructure. This 9-meter cable combines performance, compliance, and durability for telecommunications and data center applications. **Technical Specifications & Performance:** Constructed with G.657.A1 glass fiber, the 9/125 singlemode core provides single-wavelength transmission ideal for long-distance, high-bandwidth applications. Performance metrics include insertion loss of ≤0.35dB at 1310nm and 0.35dB/km at 1550nm, with return loss exceeding 20dB—ensuring minimal signal degradation across telecommunications networks. Attenuation testing follows ANSI/TIA/EIA-455-171-A-2001 standards, guaranteeing compliance with industry benchmarks. **Design & Construction:** The cable features ST/UPC connectors with Type A to B crossover polarity configuration, the most common duplex setup in commercial installations. The flexible 1.8mm diameter jacket minimizes installation strain while the OFNR (Optical Fiber Non-conductive Riser) rating meets NEC fire codes for in-building vertical runs. The distinctive red jacket enables rapid cable identification in complex network environments. **Compliance & Certification:** Full TAA (Trade Agreements Act) compliance makes this cable eligible for government and institutional procurement. RoHS/ELV compliance ensures environmental responsibility, while ANSI/TIA testing verification provides performance validation. **Applications & Use Cases:** Ideal for telecommunications infrastructure, data center patch panels, fiber-to-the-premises (FTTP) installations, and backbone connectivity. The duplex configuration supports bidirectional communication in a single cable, reducing installation complexity. **Logistics & Support:** Manufactured with components from Taiwan, US, or China, the JBX88231 ships from multiple US locations (Danville CA, Fort Worth TX, or Beaufort SC) ensuring rapid delivery. Custom lengths are available for specialized installations. The 90-day limited warranty provides confidence in your investment, with free standard shipping on orders exceeding $99. Whether upgrading existing networks or deploying new infrastructure, the JBX88231 delivers certified performance, proven reliability, and straightforward installation for professional optical networking.