The JBX88339 ST/ST duplex singlemode fiber patch cable represents a premium solution for telecommunications professionals and network infrastructure managers. This 90-meter cable combines rigorous engineering standards with practical deployment advantages, making it ideal for enterprise networks, ISP backhaul systems, and data center interconnects. **Performance Specifications:** Built with 9/125 singlemode fiber core and G.657.A1 glass fiber construction, this cable meets ANSI/TIA/EIA-455-171-A-2001 standards for attenuation testing. The insertion loss specification of ≤0.35dB (0.15dB typical) ensures signal integrity over extended distances, while return loss ≥20dB minimizes reflections that could compromise data quality. Wavelength-specific performance includes 0.25dB/km attenuation at 1310nm and 0.35dB/km at 1550nm, supporting both legacy and modern optical systems. **Compliance and Safety:** TAA compliance certifies this cable for federal government procurement, while RoHS/ELV certification ensures environmental responsibility. The riser-rated (OFNR) jacketing provides flame-retardant protection required in building plenum spaces, and the 1.8mm outside diameter offers flexibility in cable management without sacrificing durability. **Practical Advantages:** The Type A to B crossover polarity configuration is optimized for duplex patch cord applications, simplifying installation and reducing configuration errors. Custom length availability accommodates unique deployment requirements, while the robust 90-day limited warranty provides peace of mind. Manufactured in Taiwan, the United States, and China, this cable ships quickly from multiple U.S. locations (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders exceeding $99. **Ideal Applications:** Perfect for long-distance telecommunications, fiber-to-the-building installations, network backbone connections, and redundant system configurations requiring extended reach and reliable signal transmission.