The JBX85205 55-meter SC/ST duplex singlemode fiber patch cable represents the gold standard in optical connectivity for professional network deployments. Designed for organizations requiring certified, high-performance fiber infrastructure, this cable combines cutting-edge optical technology with practical engineering. **Technical Excellence** Built with a 9/125 singlemode fiber core and premium G.657.A1 glass fiber, this cable ensures minimal signal loss and maximum data integrity. The typical insertion loss of just 0.15dB (maximum 0.35dB) and return loss exceeding 20dB guarantee reliable long-distance signal transmission at both 1310nm and 1550nm wavelengths. Each cable undergoes rigorous attenuation testing in accordance with ANSI/TIA/EIA-455-171-A-2001 standards, ensuring consistent performance across every unit. **Regulatory Compliance & Safety** TAA compliant for government procurement, this cable meets strict acquisition requirements for federal and regulated industries. RoHS and ELV directives compliance ensures environmental responsibility. The OFNR riser-rated jacket provides fire safety certification essential for vertical runs in multi-story installations, meeting building codes and safety standards. **Practical Design Features** The 55-meter length accommodates large facility installations while the bright yellow jacket simplifies cable identification and management in complex network environments. The 1.8mm outer diameter offers flexible routing through existing conduit systems. SC/UPC to ST/UPC connectors in Type A to B crossover configuration are pre-configured for standard duplex patch cord applications, eliminating setup time. **Customization & Support** While this 55-meter configuration addresses most enterprise needs, custom lengths are available upon request for specialized installations. Free standard shipping on qualifying orders and rapid fulfillment from multiple US distribution centers (Danville CA, Fort Worth TX, Beaufort SC) ensure quick deployment. **Ideal Applications** Perfect for data center expansions, telecommunications infrastructure, campus network upgrades, and any installation requiring TAA-compliant singlemode fiber connectivity with proven reliability and measurable performance standards. 90-day limited warranty provides peace of mind on your network investment.